JST's Spring Energized Seals, also called Lip Seals, are normally comprised of a machined polymer jacket and a spring energizer. They are available for rod, piston, and rotary applications, and can be manufactured in a variety of polymer materials depending on each application requirement.

Our seals can be made of different PTFE materials, from Virgin PTFE or PTFE with fillers of different percentages: MoS2, glass fiber, carbon powder, carbon fiber, graphite powder, graphite fiber, and bronze.

Alongside PTFE seals, we offer a range of PEEK and UHMWPE seals profiles and PTFE and PEEK back-up rings are available in a variety of materials and designs including solid, split and contoured profiles.

Spring energized PTFE seals can be of standard groove sizes, and be tailored to any existing customer groove and in numerous jacket material and spring energizer material combinations. We use helical, cantilever and canted coil springs with a variety of different load options, and springs are available in corrosion resistant metal alloys including stainless steels, Elgiloy® or cobalt-chromium-nickel alloy, Inconel®, and Hastelloy®.

Please send us your specific requirements of applications, our engineers would be available to provide guidance on choosing the materials for you.