SpringSeal By incorporating composite sealing material with the U-ring, V-ring or O-ring or high-performance rubber, the Spring Seal can demonstrate different levels of sealing force for adapting to the intended application. Based on the AS 568A standard, it can be fabricated into an O-ring groove (e.g. radial shaft seal, piston sealing, axial surface sealing, etc.) for use as a static or dynamic (either reciprocal or rotary motion) sealing material.