PTFE
PTFE Backup Rings: Anti-Extrusion Retainers for Aerospace Hydraulic and Pneumatic Systems
Engineering reference for PTFE backup rings (packing retainers): extrusion mechanics, single versus double configurations, cut geometry, and the MS28774, MS28782, MS27595, AS5781 and AS8791 specifications.
PTFE (Teflon®) O-Rings
PTFE (Teflon®) O-Ring guide: near-universal chemical resistance from -100°F to +500°F, why PTFE is a thermoplastic and not an elastomer, cold flow and gland design, filled grades, and back-up rings.
PTFE Encapsulated O-Rings
PTFE encapsulated O-Ring guide: a seamless PTFE, FEP, or PFA jacket over a silicone, FKM, or EPDM core. Temperature ranges, chemical resistance, limitations, installation, and the sizes we stock.
