PTFE back-up ring

PTFE

Reliably Prevent Gap Extrusion Back-up rings do not have a sealing function but are used to prevent gap extrusion. They can be used in combination with O-rings or X-rings, both for static and dynamic loads. Back-up rings prevent the seal from extruding into the sealing gap and thus enable sealing of higher media pressures. They are often used in applications with pulsating or varying pressures, such as hydraulic valves and pumps, cylinder bases and heads. Benefits at a Glance Prevent gap extrusion Combinable with O-rings or X-rings Different product variants to fit your application Good lifetime Very good price-performance ratio Suitable for many industrial applications Choose the Right Product Out of a Three Types STR END (endless) and STR GS (30° slotted) made of POM (temp.: -50 to +90 °C) for use in mineral oils, fats and pressure media HFA, HFB, HFC STR END (endless) STR GS (30° slotted) made of PTFE (temp.: -200 to +260 °C) shows broad resistance to acids, bases, alcohols, oils and pressure fluids STU (endless with concave molding) made of NBR (temp.: -30 to +100 °C) for use in hydraulic oils, mineral-oil based lubricants, non-flammable hydraulic pressure fluids (max. +50 °C) and water (max. +80 °C)