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Fluorocarbon gaskets resist hydrocarbons, aromatic hydrocarbons, alcohols, organic acids, nitrogen-containing compounds, vegetable oils and greases. Use them in Style 38 couplings where Buna-S or Buna-N would break down, up to 350°F.
Application: Petroleum, chemical and solvent lines up to 350°F.
Included: one gasket per part number.
Coupling or fitting parts, by others: followers, bolts and middle rings are not included unless named in the option.
Covered for 12 months from the date of purchase under Dresser’s published warranty terms.
| Material | Fluorocarbon (Viton), Grade 224 |
| Hardness | Shore A 75 ± 5 |
| Max temperature | 350°F |
| Max pressure | 100 PSI |
Dresser gasket grade overview and Grade 27 submittal, 2021.
| Grade | Rubber | Max temperature | Max pressure | Mold code |
|---|---|---|---|---|
| 27 | SBR Buna-S | 212°F | Per coupling rating | White |
| 41 | Natural | 212°F | Per coupling rating | Dark green |
| 42 | Buna-N nitrile | 212°F | Per coupling rating | Yellow |
| 224 | Fluorocarbon (Viton) | 350°F | 100 PSI | Brown/tan |
| 365 | Graphite fiber | 1,200°F | None (may not seal leak-tight) | — |
Dresser gasket grade overview, 2021. In Style 65, 88 and 90 compression fittings the maximum is 150°F.
Storage: Dresser rubber gaskets keep five years or more on the shelf stored cool (32 to 80°F), dark and away from ozone, sunlight and weather, lying in their normal ID-OD position with nothing stacked on them.
Product videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.
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