TUF-Flex Gaskets
Introducing a technologically advanced new hygienic seal, TUF-FLEX. This revolutionary new seal from Pure Transfer is the world’s only unitized seal, setting new standards for purity, performance and flexibility. Designed to meet critical requirements in pharmaceutical, biotechnology, ultrapure water, WFI (water-for-injection) and difficult food and beverage processing, TUF-FLEX outperforms other seals while eliminating costly process interruptions.
TUF-Flex Comparison:
TYPE I
A Solid PTFE
Type I Seal is guaranteed to fail in SIP conditions. They will creep, cold flow and leak at 
T
TYPE III ENVELOPE The Envelope Seal construction provides inconsistent results between the two materials. It will also creep, cold flow and leak over time.
TUF-FLEX The PTFE grafted elastomer in a TUF-FLEX hygienic seal will maintain I.D. without re-torquing or leaking.
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
Smart Gaskets
TUF-Flex Gaskets
