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Frequently Asked Questions

Q I have a chemical pump manifold cover that our field techs must disassemble periodically. Do you have an option to a TFE O-Ring that does not require being replaced each time?

A In fact, we have two possible solutions. One is to use an FEP encapsulated O-Ring, or to use a high fluorine content fluoroelastomer O-Ring.

An encapsulated O-Ring has an elastomer core (Viton™, silicon or EPDM) around which is threaded inside an FEP jacket. The core gives the O-Ring greater memory than the standard PTFE O-Ring, while the jacket provides the equivalent chemical resistance. This product solution allows multiple cycles of disassembly.

A high fluorine content fluoroelastomer O-Ring features chemical resistance that's superior to commercial grade Viton™, and it's at a fraction of the price of a perfluoroelastomer.

Consult with one of our Sales Representatives for assistance is selecting products and pricing.

Q I've heard about Genuine Viton™. What does that mean?

A Viton™ is a registered trademark of Chemours™. Simply put, all Vitons™ are fluoroelastomers, however not all fluoroelastomers are Viton™. Genuine Viton™ is a licensing program created for two purposes: 1.) To educate the market about the design benefits of using Genuine Viton™ products; 2.) To ensure the integrity of the supply chain for the Viton™ from Chemours™ to parts manufacturers to distributors to the ultimate end-user.*

Q I need to seal a rotating shaft, but my internal pressure is over 5 psi, which is the maximum recommended pressure for my current oil seal. Can you offer any help?

A There are several issues at play given your situation, including temperature, shaft size and speed, and life cycle expectancies. We do offer standard designs that will seal up to 125 psi plus custom designs that can seal effectively over 1000 psi. If you provide us with your design parameters we'll do an analysis.

Q I'm installing a piston T-seal and having trouble keeping the back-up rings in place as the piston is pushed into the cylinder. Is there an installation tool to facilitate this?

A Yes, we have different tool designs for a variety of installations, but we have an even better solution for you. One of our manufacturers offers a new design of T-seal (and capped T-seal too!) where the back-up rings are interlocked (via mating lobes) with the elastomer element of the seal. When the seal is assembled in its groove, the back up rings won't pop out, keeping your fingers clear of danger.

Q I'm dealing with potable water. Are there any seals for this?

A Yes, we have a host of materials suitable for FDA/NSF* applications. As the variety of options is so numerous, we can't discuss them here. Please call one of our sales representatives. 

Q I have an application in which low hysteresis (the lag between making a change, such as increasing or decreasing power, and the response or effect of that change) is crucial. What would you recommend?

A Our customers have had several applications where low break-away friction in the seal was a critical element. The best example is in a pressure transducer application in which not only low hysteresis was needed, but more importantly CONSISTENT hysteresis over time (and over a 0 to 3,000 psi pressure range!) was needed. We solved this problem through a spring energized PTFE lip seal with a highly customized lip design.

*A wide assortment of certified compounds are available. UL and NSF Certified compounds are manufactured by RT Dygert. Please contact High Performance Seals for more information regarding UL and NSF Certified compounds.