| Spiral wound gaskets type: |
| Type | Thickness(mm) | | Basic form | 3.2 | 4.5 | | With inner ring | | 4.5 | | With outer ring | | 4.5 | | With inner and outer ring | | 4.5 |
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| Structure type: |
| Filler | Hoop | Inner ring | Outer ring | | Asbestos | SUS 304 | Carbon steel | Carbon steel | | Graphite | SUS 316 | SUS 304 | SUS 304 | | PTFE | SUS 316L | SUS 316 | SUS 316 | | | | SUS 316L | SUS 316L |
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| The table below may be used for selected material of inner ring and winding metal. |
| Trade name | AISI | Hardness(HB/HV) | Temperature(°C) | | Stainless steel 304 | 304 | 130~180 | -250~+550 | | Stainless steel 316 | 316 | 130~180 | -100~+550 | | Stainless steel 316L | 316L | 130~190 | -100~+550 |
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| The outer ring is generally manufactured from carbon steel with an anti-corronsion treatment. |
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| The table below may be used for determining the correct filler. |
| Filler material | Temperature(°C) | Max operating pressure(kg/cm2) | | Graphite | -200~550 | 250 | | Asbestos | -150~450 | 100 | | PTFE | -240~260 | 100 |
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| Flange type and Spiral Wound Gasket form |
| Flange type | Spiral Wound Gasket form | | Flat face flange(F.F) | Gasket with an outer ring | | Gasket with an inner and outer ring | | Raised face flange(R.F) | Gasket with an outer ring | | Gasket with an inner and outer ring | | Male and female flange(M & F) | Basic form gasket | | Gasket with an inner ring | | Tongue and groove flange(T & F) | Basic form gasket | | Gasket with an inner ring | | Flat and groove flange(F & G) | Basic form gasket | | Gasket with an inner ring |
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| Tolerances of thickness |
| Item | Thickness(mm) | Tolerances(mm) | | Gasket thickness | 4.5, 3.2 | +0.2
-0.1 | | Ring thickness | 3.0 | ±0.24 |
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| The table below specifies the production diameter tolerance (Nominal pipe diameter for flanges in accordance with): |
| | DIN (mm) | ANSI B16.5
BS1560 (mm)
Mss sp-44 | API 605 | Tolerances | Inner ring I.D.
Gasket I.D. | <=600 | <=24" | >=26" and <=34" | ±0.5 | | >600 and <=800 | >24" and <=34" | >=36" and <=60" | ±0.9 | | >800 and <=1600 | >34" and <=60" | | ±1.3 | | >1600 | >60" | | ±1.6 | | Gasket O.D. | <=600 | <=24" | <=24" | ±0.9 | | >600 and <=1600 | >24" and <=60" | >24" and <=60" | ±1.8 | | 1600 | >60" | | ±2.2 | | Outer ring O.D | | | >=1/2" and <=60" | ±0.9 | | <=600 | <=24" | | 0-1.0 | | >600 and <=1000 | >24" and <=34" | | 0-1.8 | | >1000 and <=1600 | >34" and <=60" | | 0-2.2 |
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