O-ring specifications are mainly UHSO ring specifications, UHPO ring specifications, UNO ring specifications, DHO ring specifications, piston rod O-ring specifications, high temperature O-ring, high pressure O-ring, corrosion O-ring, wear O-ring.

O-ring standards are GB 1235-76, GB GB3452.1-92;P TYPE, G TYPE, S TYPE, SS/V TYPE, F TYPE;American standard AS568, British standard series;European standard series

O-ring technical requirements include appearance requirements, size requirements and material physical properties requirements.

Appearance requirements conform to GB/T3452.2-2007

Material requirements are in line with HG/T2579-2008