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Tuf-Flex, the revolutionary sanitary gasket from RubberFab, a revolutionary unitized gasket setting new standards for purity, performance and flexibility. Designed to meet critical requirements in pharmaceutical, biotechnology, ultra-pure water, and WFI (water-for-injection) applications. And because Tuf-Flex will not impart taste or odor with flavor change, it provides the ultimate gasket performance for food and beverage processing, Tuf-Flex outperforms other sanitary hygienic seals and increases uptime by helping eliminate costly process interruptions.

A Tuf-Flex sanitary gasket’s contact surface is a layer of PTFE unitized to an EPDM rubber inner core. This totally bonded construction provides an exceptionally pure and incredibly flexible seal.

By unitizing the elastomer with a layer of PTFE, Tuf-Flex will perform like an elastomer with the chemically inert characteristics of a PTFE sanitary gasket.


  • Uniting the flexibility of an elastomer with the inert chemical resistance of PTFE
  • Seats perfectly
  • Excellent chemical resistance
  • Minimal thermal expansion
  • Exceptional flexibility

Tuf-Flex Composition

  • Will not impart taste or odor – no cross flavor contamination
  • No extractables, TOCs or particulates to contaminate product stream
  • No-pigment
  • Minimal gasket I.D. invasion
  • Exceptional cleanability response
  • Non-stick surfaces

Tuf-Flex Prevents Process Interruptions

  • Perfect cleanability
  • Outstanding service life
  • Reusable
  • Extended uptime
  • Maintains seal @ 30 in./lbs.
  • Temperature Range: -20°F to 400°F

Spec Sheets