FEP PFA VMQ ORINGS FPM EPDM SILICONE VITON FKM

● FFKM O-Rings are and alternative.FEP type PTFE Fluoropolymers (performance plastics) offer excellent chemical and temperature resistance, but lack the resiliency of elastomers (rubber) required to maintain a quality seal.

● Encapsulated and spring energized seals combine the best sealing features of plastics, elastomers and steel springs to increase chemical and temperature performance compared to most solid elastomers.

● The main offsetting limitation is PTFE's stiffness that can require custom gland design to maximize sealing by using the right amount of compression force to maintain a seal without over compressing which can shorten seal life.

● PFA type PTFE is also available for additional upper temperature resistance (up to +575°F short exposure) but not widely used due to reduced sealing performance.

● FEP PTFE outer layer covering a Silicone core in an O-Ring.The silicone core delivers the resilience required for reliable sealing, while the PTFE exterior provides good chemical and temperature resistance.

● Common USA and metric cross-sections, as well as virtually infinite diameters, are easily accessible.

● Depending on the application, the solid silicon T1002 is FEP encapsulated up to +500o F. Depending on the application, PFA type PTFE T1027 up to +575o F. O-Ring with a solid FKM (Viton) core and a FEP PTFE outer shell.

● The FKM core delivers the resilience required for reliable sealing, while the PTFE shell provides good chemical and temperature resistance.

● The FKM core provides improved chemical and compression set resistance resulting in longer sealing life in some applications. Less compressible than Silicone which can result in leaking issues in some applications.Readily available is common USA and metric cross-sections and nearly unlimited diameters.

● T1001 is FEP encapsulated Solid FKM (Viton) up to +500oF depending on application.All size Available.