EP PTFE Encapsulated O-Rings combine ultimate chemical resistance of FEP PTFE with the compress ability of rubber or steel spring core.
Select from the various core options to satisfy your application.
FEP PTFE stiffness 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. FFKM and Spring Energized Lip Seals are alternatives.Some diameters and cross sections are too small to produce.
FFKM O-Rings are and alternative.FEP type PTFE Fluoropolymers (performance plastics) offer excellent chemical and temperature resistance, but lack the resiliency of elastomers (Fkm Rubber O Ring) 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.O-Ring with a FEP PTFE outer layer encapsulating a Silicone core. The PTFE shell offers excellent chemical and temperature resistance while the Rubber Silicone Seal O Ring core provides the resiliency needed to provide effective sealing. Readily available is common USA and metric cross-sections and nearly unlimited diameters. T1002 is FEP encapsulated Solid Silicone up to +500o F depending on application. PFA type PTFE T1027 up to +575o F depending on application.
O-Ring with a FEP PTFE outer layer encapsulating a Solid FKM (Viton) core. The PTFE shell offers excellent chemical and temperature resistance while the FKM core provides the resiliency needed to provide effective sealing. 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 Rubber o Ring) up to +500oF depending on application. All size Available.
Post time: Jul-14-2023