Bevel Seat Gaskets - PTFE
Note: These gaskets are available as Metal Detectable/X-Rayable Detectomers®, contact for pricing and availability.
PTFE Sanitary Bevel Seat Gaskets are the material of choice where low temperature flexibility and hygienic seal memory are not required. We don't recommend using PTFE Sanitary Gaskets where large temperature variations frequently occur because the affect on the PTFE's density makes joints more prone to leakage. PTFE gaskets provide excellent heat resistance, second only to Tuf-Steel®, with an operating range from -100°F to 500°F. From a chemical standpoint PTFE has good stability, almost no extractables, a low absorption rate, and excellent resistance to process fluids. These John Perry Gaskets can remain in service for long periods of time in both water and steam applications.
Storing PTFE Gaskets:
- Shelf Life: 20 Years from cure date
- Store in original packaging in clean and dry warehouse
- Do not expose to direct sunlight
- Keep more than 6' away from electric motors
- Maintain temperature between 65°F and 85°F
- FDA CFR 21, 177.1550
- U.S. Pharmacopeia Class VI Certification
- USDA Hazard Analysis and Critical Control Points
- Cytotoxicity Criteria
- USDA and 3-A Sanitary Standards
- ADI Free® (Animal Derived Ingredient Free)
- Current Good Manufacturing Practices (CGMP)
- Color Code: No Dot
- -100°F to 500°F Temperature Range
- Excellent heat resistance
- Almost no extractables
- Low absorption rate
- Excellent resistance to process fluids
- Good stability
- Type I and II Tri-Clamp® Gaskets
- Screen Gaskets
- Sock Gaskets
- Orifice Plate Gaskets
- Gauge Guards
- O-Rings
- Mini Steam Trap Orifice Plates
- ANSI 150# Flange Gasket
- ANSI 300# Flange Gasket
- Q-Line Gaskets
- APC Gaskets
- I-Line Gaskets
- I-Line Gaskets
- DIN/ISO
- X-Ray Detectable
- Metal Detectable
- Custom Gaskets, Profiles, Cord, Scrapers
| 1 = Excellent 2 = Good 3 = Acceptable 4 = Marginal 5 = Poor 6 = Do Not Use | ||||||||
|---|---|---|---|---|---|---|---|---|
| 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 |
Bevel Seat Gasket Sizing | ||
| Size | Inside Diameter | Outer Diameter |
|---|---|---|
| 1" | 0.900" (22.86mm) | 1.325" (33.66mm) |
| 1-1/2" | 1.375" (34.93mm) | 1.875" (47.63mm) |
| 2" | 1.850" (46.99mm) | 2.375" (60.33mm) |
| 2-1/2" | 2.340" (59.44mm) | 2.950" (74.93mm) |
| 3" | 2.875" (73.03mm) | 3.475" (88.27mm) |
| 4" | 3.700" (93.98mm) | 4.500" (114.30mm) |