The O-ring is a two-way sealing element. The initial compression of the O-ring in the radial or axial direction determines the initial sealing capacity of the O-ring. So the appearance of the O-ring is very important.

Melon manufacture AS568 O-ring standard size chart, commonly used metric O-ring size chart, Japan JIS O-ring size chart, UK BS O-ring Size chart, four-ring® seal ring X-ring size table, square ring size chart in a wide range of rubber materials (and compounds) including: Neoprene, Silicone, EPDM, Viton(Fluorocarbon), Nitrile (Buna-N), SBR (Red Rubber), Butyl, Natural (Gum) Rubber, Polyurethane, Fluorosilicone, Hypalon, Santoprene, Hydrogenated Nitrile, Epichlorhydrin, Cloth-Inserted Rubber, Conductive Rubber, Thermoplastic Rubber, and FDA Approved Rubber. 

We also offer custom O-rings that do not require a processing fee to ensure a perfect fit. Once you any size O-ring, please contact us for a response expert service.

what is the o-ring common appearance problems?how to make o-ring quality inspection?

1.back rind& flash 

2.inner diameter, cross-section diameter

3.trimming

4.foreign material

5.mismatch、 offset