Options: (See below for temp ratings)
- 1.5" PTFE Envelope Gasket with FKM (Viton) Filler - Comes in pack of 2
- 2" FKM (Viton) Gasket - Comes in pack of 2
- 2" PTFE Gasket - Comes in pack of 1
- 3" PTFE Envelope Gasket with FKM (Viton) Filler - Comes in pack of 2
- 4" PTFE Envelope Gasket with FKM (Viton) Filler - Comes in pack of 2
- 6" PTFE Envelope Gasket with FKM (Viton) Filler - Comes in pack of 1
- 10" PTFE Envelope Gasket with FKM (Viton) Filler - Comes in pack of 1
- 12" PTFE Envelope Gasket with FKM (Viton) Filler - Comes in pack of 1
A PTFE envelope gasket has the chemical resistance of PTFE and the elastomeric characteristics of EPDM or FKM Fluoroelastomer aka (Viton). The PTFE envelope gasket meets FDA and USP Class VI standards.
| 1 = Excellent 2 = Good 3 = Acceptable 4 = Marginal 5 = Poor 6 = Do Not Use |
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|---|---|---|---|---|---|---|---|---|
| Material | Cont. Steam |
Inter. Steam |
Pure Water Ambient |
Pure Water Hot |
Process Fluids Ambient |
Process Fluids Hot |
Process Fluid Variables 0°-100°C |
Temperature Range |
| Tuf-Steel® | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -350°-550°F |
| Tuf-Flex® | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -20°-300°F |
| Food-Flex® | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -30°-250°F |
| PTFE | 1 | 1 | 1 | 1 | 1 | 1 | 3 | -100° to 500°F |
| Silicone (platinum) |
2 | 2 | 2 | 2 | 2 | 2 | 1 | -40°-450°F |
| Silicone (peroxide) |
2 | 2 | 2 | 2 | 2 | 2 | 1 | -40°-450°F |
| FKM | 3 | 2 | 2 | 2 | 2 | 2 | 2 | -30°-400°F |
| EPDM (peroxide) |
3 | 3 | 3 | 3 | 3 | 3 | 3 | -30°-300°F |
| Buna | 0 | 0 | 5 | 5 | 5 | 5 | 5 | -30°-200°F |
