Porter Seal Company is a distributor of industrial & military o-rings and backup rings that can supply you with all elastomers (silicone, viton, buna, nitrile, SBR, Vamac, fluorosilicone, EPDM).

An o-ring is a torus, or doughnut shaped object, with a circular cross section.

Usually made from an elastomer, although such materials as metal or plastic are sometimes used.

All sizes are available in various elastomers: Silicone, EPDM, Neoprene, Viton, Buna, Nitrile and Teflon.

Our military o-rings fully meet the required military regulations and range in a variety of inner diameters, outer diameters, and groove widths.

In addition to extensive inventory & standard O.E. product catalog, we offer custom tooling for particular specifications & requirements.

Porter Seal Company has the capabilities and expertise to customize products directly for you.
We manufacture & design custom products in varying types, shapes, and specifications to meet your needs.

Contact us for more information on your custom product requirements.