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Tuf-Flex® PTFE/FKM Unitized Gaskets

Tuf-Flex® PTFE/FKM Unitized Gaskets

Our Tuf-Flex® FKM Unitized Gasket Is the First Gasket of its kind!

Rubber Fab’s Tuf-Flex® sanitary gasket is the world’s first unitized gasket, and is setting new standards for purity, performance and flexibility. Tuf-Flex® is specifically designed to meet critical requirements in pharmaceutical, biotechnology, ultrapure water, WFI (water-for-injection).

Because Tuf-Flex® will not impart taste or odor, Tuf-Flex® is your ideal gasket for the Food & Beverage Industry!

Tuf-Flex® Temperature Rating
-20°F to 400°F

Resources Additional Specs

Tuf-Flex® GASKET COMPARISON

TYPE 1

TYPE 1

A Solid PTFE Type I Gasket is guaranteed to fail in SIP conditions. They will creep, cold flow and leak at delta T.
TYPE III ENVELOPE

TYPE III ENVELOPE

The Envelope Gasket construction provides inconsistent results between the two materials. It will also creep, cold flow and leak over time.
Tuf-Flex®

Tuf-Flex®

The PTFE grafted elastomer in a Tuf-Flex sanitary gasket will maintain I.D. without re-torquing or leaking.

Additional Specs

Size Part Number Gasket I.D Gasket O.D. Bead Center
1/2″ A42MPGR-TF-050-V .380 .86 n/a
3/4″ A42MPGR-TF-075-V .620 .86 n/a
1″ A40MPGR-TF-100-V .900 1.984 1.718
1-1/2″ A40MPGR-TF-150-V 1.400 1.984 1.718
2″ A40MPGR-TF-200-V 1.900 2.515 2.218
2-1/2″ A40MPGR-TF-250-V 2.400 3.050 2.781
3″ A40MPGR-TF-300-V 2.900 3.579 3.281
4″ A40MPGR-TF-400-V 3.869 4.682 4.344
6″ A40MPGR-TF-600-V 5.817 6.507 6.156
Achieve higher performance under SIP/CIP Conditions:
  • Uniting the flexibility of an elastomer with the chemical resistance of PTFE
  • Seats perfectly
  • Superior resistance to cold flow and creep
  • Minimal thermal expansion
  • Outstanding service life
  • Exceptional flexibility
  • U.S. Pharmacopeia Class VI Certification
  • Cytotoxicity Criteria
  • Title 21 CFR 177.260 and Title CFR 177.1550
  • USDA and 3-A Sanitary Standards
  • Current Good Manufacturing Practices (CGMP)
  • ASME-BPE Standards
  • Animal Derived Ingredient Free
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