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Cairong (Tianjin) International Trade Co., Ltd.

2 yrs
·Manufacturer/Factory
Main Products:
Sealing products
Country/Region:
Tianjin, China
Sample Service:
Sample Available
Company Profile:
Cairong (Tianjin) International Trading Co., Ltd., established in 2005, is a professional integrated industrial and trading enterprise located in Tianjin, China, enjoying a strategic location and convenient transportation. The company specializes in the development, manufacture, and sale of rubber raw materials, rubber seals, injection molded products, and metal molds. We provide customized solutions for the automotive, industrial machinery, electronics, aerospace, and oil and gas sectors, both domestically and internationally. Our products are exported to North America, Europe, and the Asia-Pacific region. We are ISO, SGS, and CE certified, and guarantee compliance with international standards and regulations such as RoHS and REACH. Over the years, while ensuring product quality, we have been committed to providing customers with cost-effective solutions. Our professional OEM&ODM design, R&D, and manufacturing team can provide comprehensive support from product conception to mass production, ensuring we can tailor tailored products to meet your needs. Solving problems for our customers and satisfying their needs is our unwavering pursuit.

WUXI YAMARINE ENGINE CO.,LTD

4.7
·Manufacturer/Factory
Main Products:
5HP -300HP Outboard Motor & Engine, Outboard Spare Parts, Bearing, Piston Kit & Ring, Gear& Clutch Dog, Propeller, Coil Charge & Cdi & Ignition Coil & Pulser Coil, Drive Shaft & Propeller Shaft, Gasket, Connecting Rod Kit
Country/Region:
Jiangsu, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
YAMARINE come from Japan brand, located in the New Science and Technology Zone, Wuxi City, Jiangsu Province, Industrial Zone. YAMARINE Outboard motor is manufactured in China with original Japan spare parts, and We use Japanese technology for processing and assembly, and Providing 2 stroke from 3HP-85HP and 4 stroke 5HP-60HP full engine, YAMARINE outboard engines deliver unmatched reliability and performance.

Huzhou Guoneng New Material Co., Ltd.

9 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Gasket Maker, UV Light Glue, Leather Repair & Restoration Kit, Epoxy & Putty, Headlight Restoration Kit, Speedy Fix, Windshield Repair Kit, Anaorebic Thread Selant, Aerosol Cleaner & Grease, Super Glue
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Huzhou guoneng new material was established in 1996. Over 25 years professional manufacture experience, we become one of the largest manufacture on adhesive in huzhou city zhejiang China.

Jiangyin No.3 Rubber Manufacturer Co., Ltd.

43 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
O-Ring, Oil Seal, Skeleton Oil Seal, Silicone O-Ring, Various Rubber Seals, Rubber Gasket, Heat Exchanger Gasket, FKM Rubber O-Ring, TC Oil Seal, SC Oil Seal, Double Lip Oil Seal, Single Lip Oil Seal
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
With 35 years experience in producing rubber oil seals, Jiang Yin (No. 3) Rubber Manufacturer Co., Ltd. is a professional manufacturer and industry leader in the researching, manufacturing and selling types of skeleton oil seals, O rings, Rubber gaskets, Pump valve oil seals and Oil seal cover.

Qingdao Ruipute Energy Saving Equipment Manufacturing Co., Ltd

4 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Plate Heat Exchanger, Heat Exchanger Plate, Heat Exchanger Gasket
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Qingdao Ruipute Heat Exchange Equipment Manufacturing Co., Ltd. is one of the largest manufacturers of plate heat exchangers, plates, and gaskets in China. We are capable of providing products that can replace all brands and models.

Jiangsu Sealstars Sealing Technology Co., Ltd.

14 yrs·4.5
·Manufacturer/Factory & Trading Company
Main Products:
Non-Asbestos Sheet; Gasket
Country/Region:
Jiangsu, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Jiangsu Sealstars Sealing Technology Co., Ltd. Was founded in 2013, is located in the beautiful Siyang. The registered capital of the company is 34.7 million yuan, covers an area of 102 acres, with an annual capacity of 2000 tons. The company mainly produces high-quality asbestos-free rubber sheets, integrating research and development, production and sales. The company formerly known as Ningbo Cel, has a history of 14 years.

Zhoushan Hengshun Sealing Pieces Co., Ltd.

24 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Gasket, Head Gasket, Gasket Kit, Sealing Gasket
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Zhoushan Hengshun Sealing Pieces Co., Ltd. Founded in 1998, is the stock cooperation system enterprise contributed by the economic entities. The company is situated in Daishan, the new developed area in Zhoushan islands, known as "fairy islands of Penglai", covering an area of more than 13000 square meters, plant construction area of more than 8800 square meters, and employing more than 160 workers as well as 35 professional technicians.

Ningbo Rilson Sealing Material Co., Ltd.

Main Products:
Spiral Wound Gasket, Ring Joint Gasket, Sealing Gasket Material, Sealing Material
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Ningbo Rilson Sealing Material Co., Ltd located in the south of Hangzhou Bay, China, near Hangzhou Ningbo and Shanghai, enjoy convenient transport, is an enterprises integrated science and technology. Professionally engaged in sealing gaskets' and sealig materials' development, promotion and applications.

Wenzhou Zhenghai Sealing Co., Ltd

Main Products:
Ring Joint Gasket, Oval Ring Joint Gasket, Octagonal Ring Joint Gasket, Spiral Wound Gasket, Sealing Gasket, Oil Sealing, Gasket, Flange Gasket
Country/Region:
Zhejiang, China
Sample Service:
Sample Available
Company Profile:
Wenzhou Zhenghai Sealing Co Lid is located in Wenzhou Binhai Industrial Zone, Adiacaent to Wenzhou airport, the trafic is veryconvenient. Companies specialzing in the production of metalic ring gasket (oval gasket, octagon gasket and the lens

Moken (Xiamen) Industrial Co., Ltd.

10 yrs
·Manufacturer/Factory & Trading Company
Main Products:
O-rings, Y-rings, Star-shaped Seals, Gaskets, Rubber-reinforced Fabric Components, Rubber-metal Bonded Parts, Various Custom Rubber Products
Country/Region:
Fujian, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Moken (Xiamen) Industrial Co., Ltd. Was established in 2017. The company is located in Tong 'an District, Xiamen City, Fujian Province with beautiful environment and convenient transportation. Factory area: 6000 square meters. Is specialized in the production and sales of various rubber products, is a set of formula development, rubber mixing, molding in one of the comprehensive enterprises. The main production rubber O-ring, X-ring, Y-ring, gasket and all kinds of rubber products.

Xingtai Shuilian Import and Export Co., Ltd

1 yrs
·Manufacturer/Factory
Main Products:
Rubber Products
Country/Region:
Hebei, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Xingtai Shuilian Import and Export Co., Ltd. is an integrated industry and trade enterprise integrating independent R&D, production, sales and foreign trade export. It holds independent import and export operation rights and owns a dedicated production factory for rubber seals, enabling full-chain independent control from raw material procurement and production to export.

Julu County Hengfeng Seal Factory

Manufacturer/Factory & Trading Company
Main Products:
Sealing Gasket, Metal Coated Gasket, Copper Seal Gasket, Oil Seal, Filter Element, Rubber Gasket, O-Ring, Asbestos Gasket, Non-Asbestos Gasket, Stainless Steel Washer
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Julu hengfeng seal factory specializes in producing all kinds of asbestos-free gaskets, graphite gaskets, stainless steel stamping gaskets, metal-coated gaskets, rubber gaskets of various materials, sealing rings and diesel engine filter elements, and has more than 20 years of production experience. The surface color, material, length and thickness of all products can be customized according to your needs. We will provide you with high-quality materials, perfect design, accurate size and thoughtful service. Our factory organizes production strictly according to ministerial standards and national standards, and does a good job in after-sales service to ensure product quality, and fully meets the technical conditions for the production of the above products. Over the years, the product quality is stable, best-selling all over the country, get the user's praise, the company's surrounding resources have outstanding advantages, superior geographical location, convenient transportation, logistics network all over the country, the company provides customers with first-class products, survival by quality, development by service, and always adhere to the contract and keep faith as the enterprise purpose. Since its establishment, the factory has adhered to the principle of high starting point, high quality and high standard of service. The use of advanced equipment and advanced testing means, bring together many years of rich experience in production, to create perfect products for users. Julu hengfeng seal factory looks forward to long-term cooperation with you.

Hebei Changlian Rubber and Plastic Products Co., Ltd

8 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Rubber Seal Strip, Door Seal, Rubber Gasket, Oven Door Seal, Rubber Fender, Shower Door Seal, Sponge/Foam Seal Strip, Mud Flpas, Rubber Hose
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
HeBei ChangLian Rubber And Plastic Products Co., Ltd is located in XingTai City, HeBei Province. We are engaged in rubber and plastic extrusion, rubber molding products, injection molding products and rubber hose. With complete supply chain from R&D, mould design, mould making, products production, inspection, packing and exporting. We have the ability to extrude and mould a range of materials including: Silicone, EPDM, Neoprene, NBR and natural rubber, PVC, TPE, TPV, PU as well as a range of different sponge and foaming rubber. Our products are including rubber and plastic seal strip, auto rubber seal, weather strip, glass shower door seal, garage door seal, rubber fender, rubber edge trim, rubber cable protector, oven door seal, solar panel seal, foaming and sponge rubber, rubber gasket, rubber grommet, EPDM hose, silicone hose.

Haining Zhengli Rubber & Plastic Factory

5.0
·Manufacturer/Factory & Trading Company
Main Products:
Sealing Ring, Rubber Gasket, Rubber Damper, Rubber Bushing, Rubber Diaphragm, Rubber Grommet, Rubber Tube, Rubber Plug, Rubber Sheet, Silicone Mat
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
With three machine and 100 square meter of space, Haining ZhengLi Rubber & Plastic Factory started its custom rubber part manufacturing business on January 1st, 1993. Founder Yuezhong Wang and his family built the company from the ground up on a foundation of commitment, hard work, quality service & products, and family values which are "To Be Honest, To Do Best".

Hebei Xianghe Rubber & Plastic Products Co., Ltd.

5.0
Main Products:
Rubber Seal Strip, Weather Strip, Silicone Seal, EPDM Seal, Rubber Seal, Molding Rubber Parts, Oil Seal, Rubber Gasket, O-Ring
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Founded in 2010, Hebei Xianghe Rubber & Plastic Products Co., Ltd is located in the Qinghe county Hebei province, it covers more than 10, 000 square meters of area(7, 000 m2 construction area) and with more than 160 employees (including qualified technicians 20 people), specialized in rubber molding & extrusion more than 15 years, industries related train, automotive, curtain wall, doors and windows, ship, electric appliance cabinet, containers etc. It already has become a leading manufacture of rubber products which can provide OEM orders processing, newly-designed products development and after services programs.

Chengdu Junma Sealing Technology Co., Ltd

30 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Sealing Materials, Gaskets
Country/Region:
Sichuan, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Chengdu Junma Sealing Technology Co., Ltd., founded in 1997, is a national high-tech enterprise integrating R&D and production of friction sealing materials. It produces more than 4, 000 tons of asbestos-free sealing materials and friction materials annually, and has dozens of sealing materials that can adapt to different working conditions.

Ningbo Boman Mechanical & Technology Co., Ltd.

Main Products:
Oil Seal, O Ring, Customize Molded Rubber Part, Bonded Seal, Extrusion Strip, Rubber Ball, Valve Stem Seal, Rubber Product, Plastic Products, Silicone Product
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Ningbo Boman Mechanical & Technology Co., Ltd was founded in 2010, Located in Ningbo, one of the largest ports in China. Company adhering to the "Industrial change life" business philosophy with the international working style and localization professional spirit, service to the worldwide customers.

Shanghai Hairen Rubber Products Co., Ltd.

16 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Automobile wiring harness components/Silicone Components for Household Appliances/Industrial shock absorbers/Valve core seal component/Industrial suction cup
Country/Region:
Shanghai, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
"Hairen Rubber and Plastic" was established in Shanghai in July 2011. As a leading domestic supplier of rubber and plastic products, our company provides a full range of rubber products including FKM, HNBR, FFKM, EPDM, NBR, CR, SBR, NR, IIR, and Si. These products are widely used in the automotive, aerospace, medical, home appliance, and industrial fields, primarily for critical applications such as sealing, vibration damping, and connection. With excellent temperature resistance, oil resistance, weather resistance, water resistance, and corrosion resistance, we provide reliable rubber and plastic solutions for various precision equipment.

Guangzhou Jundasheng Hardware and Electrical Appliance Co., Ltd

24 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Screws, Nut, Stamping Part, Electronic Accessories, Custom Hardware Accessories, Product Accessories, Gold-Plated Metal, Non-Standard Part, Industrial Facilities and Components, Fasteners and Connectors
Country/Region:
Guangdong, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Jundasheng Hardware Appliance Co., Ltd. Was founded in 2003, located in Baiyun District, Guangzhou, the company is a production, research and development, sales as one of the professional fastener production factory, home has many years of professional production experience. The products are made by multi-function mechanism, and the well-known enterprises at home and abroad are introduced. The products are fully in line with international standards and are well received by customers at home and abroad. Through scientific management, Jundasheng Hardware & Electrical Co., Ltd. Has obtained ISO9001 quality management system certification and SGS international certification system certification.

Hangzhou Well-Pack Material Co., Ltd.

21 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Films & Seals
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Established in 2006, Hangzhou Well-Pack Material Co., Ltd. (HZWP) was set up in Hangzhou of China, as an extension of its parent company, Well-Pack Industries Co., Ltd. Taiwan (WPTW), to better serve the growing clients of the LCD industry, cosmetic industry, lubricant industry and food & beverage industry in the fast developing China and overseas. Carrying the tradition of WPTW, Hangzhou Well-Pack Material Co., Ltd. takes further steps on material research and its subsequent application development. We pride ourselves to be able to build long term relationships with some of the best known companies of the world. We have always been keen to work as a solution provider for our clients.

Hebei Guangte Rubber Products Co., Ltd.

13 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Rubber Seal Strip, Car Seal Strip, Door and Window Sealing Strips, Door Sealing Strip, Silicone Insulating Sleeve, Rubber Seal
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Hebei Guangte Rubber Products Co., Ltd., founded in 2013 with a registered capital of 20 million RMB and independent import and export qualifications, is a leading comprehensive enterprise integrating R&D, production, sales and import-export trade, and a trusted partner for global rubber product buyers.

Shanghai Empire Mechanical Engineering Co., Ltd.

22 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Plate Heat Exchanger; Plate Heat Exchanger Plate; Plate Heat Exchanger Gasket; Hydraulic Press
Country/Region:
Shanghai, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shanghai Empire is premium Heat Exchanger and Spare Parts manufacturer in China, specialized in designing and manufacturing plate and shell heat exchanger, plate heat exchanger, gaskets&plates, hydraulic press and evaporator&condenser, also undertake engineering and projects. Since our establishment, we have been committed to providing optimized heat transfer solutions for our customers.

Zhenjiang Chunhuan Sealing Materials Co., Ltd. (Group)

34 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Teflon Products; Sealing Materials; PTFE Products; Rubber Sealants; Teflon seals
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Zhenjiang Chunhuan Sealing Materails Co., Ltd(Group), a member of China Fluoroplastics commisious. Establish in 1985, now being becoming a leading company in China after more than 30 years.

Tongxiang Spring Rubber & Plastics Tech Co., Ltd.

17 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Rubber Product, Rubber Parts, Bellow, Damper, O Ring, Grommet, Gasket, Custom Rubber, Seals, Rubber Plug
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Tongxiang Spring Rubber & Plastics Tech Co., Ltd. is a joint-stock enterprise integrating development, production and trade. Spring is endowed with ideal geographic conditions and convenient traffic, only 100 kilometers from Shanghai in the east, the largest harbor in China, and 60 kilometers from beautiful West Lake Hangzhou in the west.

Anping Yaolun Wire Mesh Products Co., Ltd

4 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Gas-liquid Filter Screen, Stainless Steel Mesh, Shielding Mesh, Corrugated Mesh, Woven Mesh, Demister, Demisting Screen, Elastic Mesh
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Founded in 1994, Anping Yaolun Wire Mesh Products Co., Ltd. is rooted in Anping County, Hebei Province - the internationally renowned "Hometown of Wire Mesh in China, " where the wire mesh industry has flourished for over 500 years. With nearly three decades of continuous development, our company has evolved from a small specialized workshop into a respected manufacturer in the field of gas-liquid separation and filtration products. In 2022, we further strengthened our foundation by integrating advanced management systems and expanding our production facilities, building upon 13 years of hands-on experience from our core manufacturing team.

Xingtai Zhongte Seal Parts Co., Ltd.

10 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Oil Seal, Tc Oil Seal, PU Seal, Hydraulic Seal Kit, Valve Cover Gasket, Seal Kits, Crankshaft Oil Seal
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Xingtai Zhongte Seal Parts Co., Ltd. Was established in 2017 with a clear vision: To become a trusted global partner in the sealing industry. We are a professional manufacturer and exporter of oil seals, O-rings and mechanical sealing components, providing one-stop sealing product procurement services for customers around the world. Over the years, we have served clients in more than 50 countries across Asia, Europe, the Americas and Oceania, and our global footprint continues to expand.

Jiangsu Best New Medical Material Co., Ltd.

25 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Rubber Product, Co-Extrusion Film, Infusion Film, Biological Filmmulti-Layer Film, Rubber Plugs, Rubber Gasket, Infusion Bag, Infusion Cap, Infusion Port, PVC Film
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Jiangsu Best New Medical Materials Co., Ltd., as a holding subsidiary of Shijiazhuang No. 4 Pharmaceutical Co., Ltd. (a listed company in Hong Kong), is a national high-tech enterprise specializing in research and development, manufacturing, and sales of new medical /pharmaceutical packaging materials including butyl rubber plugs (film-cladded plug and film-coated plug), gasket, multi-layer co-extruded infusion film (including UV colored film), infusion cap, infusion port, infusion bag, CAPD bag, and multi-layer co-extruded biological film. It is a listed enterprise on the NEEQ market (Best Medical Materials 873710). The company currently has two production bases, a rubber plug division, and a co-extrusion film division, and maintains industry-university-research cooperation with several colleges and universities.

Xingtai Hiken Sealing Technology Co., Ltd

3 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Oil Seal. Rubber Parts, Tc Oil Seals, Automobile Oil Seal, Agricultural & Construction Machinery Oil Seal, Wheel Hub Oil Seals for Tractors, Valve Stem Seals, Precision Rubber Parts, O-Rings, Standard Seal, Rubber Oil Seal
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Xingtai Hiken Sealing Technology Co., Ltd is located at Datuntou, Julu County, Xingtai City, Hebei Province, China. Covers an area of about 15, 000 square meters, employs 130 people, including 20 college graduates, 15 managers, responsible for technology, new product development and Sales project.

Foshan Nanhai Chongtai Fire-Proof Material Co., Ltd.

17 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Seal, Gasket, Sealant, Drop Down Seal, Ventilation Grille, Fire Resistant Insulation Cotton, Fire Insulation Board, Acoustic Felt, EPDM, Rubber Seal
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Foshan Nanhai Chongtai Fireproof Materials Co., Ltd. Founded in 2009, the company has been committed to providing comprehensive solutions in the fields of fire protection, sound insulation, thermal insulation, and thermal preservation. It is recognized as a high-tech enterprise, a specialized and innovative enterprise, and an intellectual property demonstration unit, having been certified as a National High-Tech Enterprise.

Jurong Cardbeauty Trading Co. Ltd

8 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Manlid Seal, Pressure Gauge, Thermometer, Valve Accessories
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
The company produces and exports various fluid sealing products and materials. Main business: PTFE products (processed parts), packing materials, sealing gaskets, anti-corrosion steel-lined pipe fittings and tanks (plastic-lined), etc. The products are applied in industries such as petrochemical, oil refining, power, shipbuilding, semiconductors, new energy, nuclear power, and military. Meanwhile, the products are exported to Europe, America, the Middle East, South Korea, Japan, and Southeast Asian countries and regions. Polytetrafluoroethylene (commonly known as plastic king) has excellent comprehensive properties such as corrosion resistance, high temperature resistance, aging resistance, high insulation, high lubrication, non-adhesion, etc., and is widely used in aviation, chemical, electronics, machinery and other industries. The white and black combined seal ring is used for ISO-TANK (international standard container, referred to as tank box, mainly used for the transportation of dangerous chemicals) tank mouth seal. The sealing ring used in the tank is divided into ordinary sealing ring and super sealing ring, commonly known as white and black (that is, white and black combined sealing ring). Domestic and foreign fluorine-coated D-type sealing rings are joint products, and the tetrafluoroethylene joint part is damaged by the sodium layer during high-temperature melting, which directly affects the adhesion between the tetrafluoroethylene film and the rubber body. In addition, the parting surface of the product mold is on both sides of the sealing ring, so the inner ring of the product inevitably appears the parting surface flash, which not only affects the appearance of the product. Mperature resistant silicone rubber O-ring and low pressure variable fluorine rubber O-ring is determined. Inorganic fillers were used to fill and blend modified fluorine plastics, and the types and dosage of fillers were studied. Independently developed mold structure, under the condition of precise positioning of rubber O-ring, injection modified fluorine plastic method to achieve a molding, full coating process. Main technical indicators: According to JB/T 10706-2007, fluorine plastic fully coated silicone rubber O-ring: Tensile strength