Unflanged Sanitary Tri-Clamp® Gaskets - PTFE
PTFE Sanitary Tri-Clamp® 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. With that said we recommend using high pressure clamps to help negate the affects of any temperature fluctuations. 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 Tri-Clamp® Gaskets can remain in service for long periods of time in both water and steam applications. If a slight misalignment of the joint is observed it is recommended to instead use Rubber Fab's Tuf-Flex® Gaskets consisting of a PTFE contact surface grafted to an EPDM core.
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
PTFE Gasket Standards Compliance:
- 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
- ASME-BPE Standards for Type I and Type II
- ADI Free® (Animal Derived Ingredient Free)
- Current Good Manufacturing Practices (CGMP)
PTFE Tri-Clamp® Gasket Features:
- 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
PTFE Material is also available in:
- Type II Flanged 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
- Bevel Seat Gaskets
- I-Line Gaskets
- John Perry Gaskets
- Q-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 |
Tri-Clamp® Gasket Sizing | |||
| Size | Inside Diameter | Outer Diameter | Bead Diameter |
|---|---|---|---|
| 1/2" | 0.40" (10.2mm) | 0.87" (22mm) | n/a |
| 3/4" | 0.64" (16.2mm) | 0.87" (22mm) | n/a |
| 1" | 0.90" (22.9mm) | 2.00" (50.5mm) | 1.71" (43.5mm) |
| 1-1/2" | 1.39" (35.3mm) | 2.00" (50.5mm) | 1.71" (43.5mm) |
| 2" | 1.88" (47.8mm) | 2.52" (64mm) | 2.22" (56.5mm) |
| 2-1/2" | 2.39" (60.5mm) | 3.05" (77.5mm) | 2.78" (70.5mm) |
| 3" | 2.88" (73.1mm) | 3.58" (91mm) | 3.29" (83.5mm) |
| 4" | 3.85" (97.7mm) | 4.67" (119mm) | 4.33" (110mm) |
| 5" | 4.86" (123.5mm) | 5.68" (144.2mm) | 5.29" (134.3mm) |
| 6" | 5.80" (147.2mm) | 6.57" (167mm) | 6.16" (156.5mm) |
| 8" | 7.80" (198mm) | 8.56" (217.4mm) | 8.15" (207mm) |
| 10" | 9.74" (247.4mm) | 10.55" (268mm) | 10.12" (257mm) |
| 12" | 11.74" (298.2mm) | 12.56" (319mm) | 12.17" (309mm) |