Black precision molded rubber X-rings (Quad Rings), four-lobed anti-twist sealing rings. Available in NBR, Silicone, EPDM, FKM, High-Fluororubber, HNBR. Designed for dynamic and static sealing, less twisting than standard O-rings. Custom sizes available.
This black X-ring, also known as quad ring, is a four-lobed molded rubber sealing ring, engineered as an upgraded alternative to standard O-rings for both static and dynamic sealing applications.
√ Multiple rubber material selections: NBR, Silicone, EPDM, FKM, High-Fluororubber and HNBR to fit different media and temperature environments.
√ Unique 4-lobed X profile, effectively prevents twisting and rolling inside the groove during reciprocating motion.
√ Two separate sealing contact surfaces, delivers stable sealing performance and reduces friction compared with traditional O-rings.
√ Smooth molded surface with consistent dimensional tolerance, good compression set resistance and excellent rebound elasticity.
√ Wide range of standard sizes, custom dimensions and cross-sections can be produced according to your requirements.
The special X-shaped structure is the core advantage of quad rings. Standard O-rings tend to twist and get damaged under reciprocating movement, while X-rings eliminate this risk. For hydraulic and pneumatic dynamic sealing, it can extend service life and lower leakage probability. Choose FKM for high temperature and chemical resistance, NBR for oil resistance, EPDM for weather and aging resistance.
This X-ring quad ring is a high-performance rubber sealing choice to replace O-rings. It works reliably in hydraulic, pneumatic and general equipment sealing scenarios. We support custom molding to meet your special size demands.