Duram produces and distributes a wide variety of O-rings in different sizes and materials. Duram Rubber Products can deliver most of the standard ISO 3601-1 dimensions chart, as well as many other sizes made to order.

Duram O-rings are made of NBR, EPDM, FKM, silicone, etc., and have standard approvals from WRAS (BS6920), Kiwa (BRL K17504), NSF (ANSI 61), for use in drinking water systems.