Unflanged Sanitary Tri-Clamp® Envelope Gaskets - Tuf-Flex® (Grafted PTFE/EPDM)
Tuf-Flex® Tri-Clamp® Gaskets from Rubber Fab Technologies Group are the world's only unitized seal, setting new standards for purity, performance and flexibility. Designed to meet critical requirements in pharmaceutical, biotechnology, ultra-pure water, WFI (water-for-injection) and difficult food and beverage processing, Tuf-Flex® outperforms other hygienic seals while eliminating costly process interruptions.
A Tuf-Flex® hygienic seal's contact surface is a layer of PTFE grafted to an EPDM rubber inner core. This totally bonded construction provides an exceptionally pure and incredibly flexible seal. By grafting the elastomer with a layer of PTFE, Tuf-Flex® will behave like an elastomer but will prevent the product contamination, service interruptions and clean-up costs associated with elastomer seals. Because its elastomer core is protected by a unitized layer of PTFE, Tuf-Flex® hygienic seals will not release elastomer extractables or particulates, totally eliminating spalling. The result is an exceptionally maintained sanitary tubing I.D. with no I.D. invasiveness or system contamination, and the PTFE grafted elastomer in a Tuf-Flex® seal will maintain I.D. without re-torquing or leaking.
Storing Tuf-Flex® Gaskets:
- Shelf Life: 10 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 / FDA CFR 21, 177.2600
- U.S. Pharmacopeia Class VI Certification
- Cytotoxicity Criteria
- ADI Free® (Animal Derived Ingredient Free)
- USDA Standards
- 3-A Sanitary Standards
- Current Good Manufacturing Practices (CGMP)
- -20°F to 300°F Temperature Range
- Flexibility of an elastomer with the chemical resistance of PTFE
- Outstanding purity
- Seats perfectly
- Superior resistance to cold flow and creep
- Excellent chemical resistance
- Minimal thermal expansion
- Leak-proof performance
- Outstanding service life
- Exceptional flexibility
- No extractables, TOCs or particulates to contaminate product stream
- No-pigments
- No gasket extrusion into the ID
- Exceptional cleanability response
- Non-stick surfaces
- Maintains seal @ 30 in/lbs
- Perfect cleanability
- No re-torquing necessary
- Up to 100 SIP cycles guaranteed
| 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) |