Product
X-Rings (Quad Rings)
Four-lobed cross-section seals that reduce spiral twist in dynamic applications and provide two sealing lines per side compared to a standard O-ring, at lower compression force.
X-rings (quad rings) with four-lobed cross-section for superior sealing performance.
Overview
What it is
An X-ring (also called a quad ring) is a molded elastomer seal with a four-lobed cross-section instead of the O-ring's round one. The four lobes give the ring two separate sealing surfaces on each side of the groove instead of one.
Because the cross-section has two contact points per side rather than a single round contact patch, an X-ring seals with a lower squeeze force than an equivalent O-ring for the same leak-tightness — and because the lobes resist rolling in the groove during motion, X-rings are far less prone to the spiral-twist failure that shortens O-ring life in reciprocating (dynamic) applications.
Why use it
Key benefits
- Two sealing surfaces per side — redundancy if one contact point is damaged
- Lower compression force needed for the same seal
- Resists spiral twist in dynamic/reciprocating service
- Drop-in replacement for an O-ring in most standard grooves
Materials
Which compound, and why
Applications
Where it's used
Reciprocating hydraulic cylinders, dynamic rotary shaft seals, and static applications that benefit from the double sealing line.