Definox claims the watertightness and sanitary reliability of the PFA seal, a patented floating seal technology.

World-leading manufacturer and supplier of Mechanical Seals, Chem-Ring® FEP/PFA Encapsulated Seals, Gland Packing, and Tefcan Expanded PTFE Gasketing.

O-Ring with a FEP or PFA (Teflon®) outer layer encapsulating a Silicone core. The Teflon® shell offers excellent chemical and temperature resistance while the Silicone core provides the resiliency needed to provide effective sealing. Readily available in common USA and metric cross-sections and nearly unlimited diameters.

HIGH PERFORMANCE SEAL FEP-/PFA-encapsulated O-rings YOUR ADVANTAGES AT A GLANCE • Very good resistance to nearly all media (exceptions are alkali metals and some fluorine compounds) • Applications in broad range of temperatures • Superbly suited for use in the food, chemical and pharmaceutical industries • Low contamination • Low ...

PFA O-rings have greater heat resistance properties of -60°C to +204°C (with an FKM core) and -60°C to +260°C (with a Silicone core). They also offer greater resistance to chemicals due to a seamless join that is completed through an advanced heat moulding process.

Comprising 302 stainless flat wound ribbon springs encapsulated in either an FEP or PFA Teflon™ jacket to form an O-ring, NES Astra Seal® span a temperature range from -250°C to 260°C (-420°F to 500°F).

May 20, 2021 · The Fluorolon ES Seal comprises of 302 stainless flat wound ribbon spring encapsulated in either a FEP or PFA jacket to form an O-Ring.

PFA (perfluoroalkoxy-copolymer): Teflon® PFA encapsulated o-rings possess many of the same properties as FEP, but with higher mechanical strength and increased temperature resistance. PFA encapsulation is typically used in applications …

All heat seals are made on state-of-the-art thermal impulse heat-sealing equipment, insuring maximum seal strength. Teflon® PFA film can offer continuous service temperatures up to 260°C (500°F). In addition, Teflon® PFA provides superior creep resistance at high temperatures, excellent low-temperature toughness, and exceptional flame ...