We offer QUAD RINGS / X rings in imperial and Metric Sizes Similar to O rings
size range. In Shore Hardness 40 – 70A in Black Color. In NITRILE, EPDM, NEOPRENE, SILICONE, VITON Rubber.
Quad Rings are Expensive compared to O rings and are used in applications critical as follows.
IT is four-lobed seals used today around the world for a wide variety of static and dynamic sealing
applications. Avoiding the spiral Twist to minimize breakaway friction, an O-Ring groove must be wide enough
to allow rolling or twisting of the seal. In the long stroke of a reciprocating seal application, this twisting
action can strain and eventually tear the rubber, causing a failure mode known as spiral twist.
To prevent spiral twist, the Quad-Ring seal's four-lobed configuration is designed to withstand the distortion
and extrusion often caused by high or pulsating pressure.
To accommodate these forces, a Quad-Ring seal uses a narrower groove than a comparable O-Ring seal. because less
squeeze means less friction with the four-lobe design, seals last longer. Therefore, equipment in which the
Quad-Ring seal is installed will operate longer and require less maintenance.