An O-ring, also known as a toric seal, is a loop of elastomer, polymer or combination of polymer and elastomers with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface. O-rings are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable and have simple mounting requirements. They can seal tens of megapascals (thousands of psi) of pressure.
Rubber O-rings may be used in static applications or in dynamic applications where there is relative motion between the parts and the O-rings. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons.
The SealTec rubber O-rings could be supplied in different sizes, grades and materials, like NR, NBR, Neoprene, EPDM, Silicone and FKM
FEP / PFA O-rings
An encapsulated ‘O’-Ring is an ‘O’-Ring bound by a seamless and uniform FEP/PFA encapsulation, which encloses an elastomeric core, completely protecting it from the media. They combine the energizing properties of an elastomeric ‘O’-Ring with the resilience to extreme temperatures and hostile chemicals of FEP/PFA. The SealTec encapsulated O-rings are available in silicon core, Fluorocarbon (Viton) core, hollow inner core, square/rectangular core. We also supply special custom profiles and ring shapes suitable for your applications
While the majority of the O-rings are supplied in rubber material, for some applications PTFE or glass filled PTFE is a better material. PTFE O-rings are excellent resistant against most aggressive media, they are FDA compliant, they don’t swell,. Further they are suitable for high and cryogenic applications and not susceptible to explosive decompression.