Quattro Seals

Quattro Seals are four-lobed seals with a geometry that provides twice the number of sealing surfaces when compared to that of a standard O-ring.  Thus, damage to any particular lobe will be much less likely to cause seal failure.  Twice the number of sealing surfaces also allows a Quattro Seal to seal at lower pressures and/or less interference than would be feasible with an O-ring.

The four-lobed configuration also creates a more stable seal that reduces the likelihood of spiral twisting in reciprocal applications.  This is because than rather than relying solely on squeeze to achieve a seal like an O-ring, a Quattro Seal employs both squeeze and deflection to affect a seal. Quattro Seals can be used in standard O-ring grooves or used in deeper Quattro Seal specific grooves, resulting in less friction and longer seal life. Quattro Seal grooves can also be narrower than O-ring grooves, as spiral failure is less of an issue. For Quattro Seal groove recommendations, please go to our Groove Design Chart for Quattro Seals.

RT/Dygert stocks many different AS568 sized Quattro Seals in either 70 durometer nitrile, or 75 durometer Viton®.