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The T-seal comes in both piston (TPO) and rod (TRO) styles. This double acting seal design can be accommodated by a standard O-ring groove. The design helps prevent extrusion and spiraling up to 5,000 PSI. Hi-Tech Seals also offers a locking T-seal profile, which aids in the installation process.

The T-seal design consists of a T-shaped elastomer component supported by a back-up ring on each side. The combination of these elements results in a stable seal that ensures a positive sealing lip configuration. Popular materials include nitrile (NBR), hydrogenated nitrile (HNBR), and fluorocarbon/Viton™ (FKM) for the elastomer component and KasPex™ PEEK for the back-up rings. If you require assistance choosing the correct T-seal to replace an O-ring and a Back-up combination, please consult a Hi-Tech Seals professional.

Product Profiles



Piston (TPO) Rod (TRO)
Imperial Imperial