4.5MM (.177) BUNA-N O RING CORD 70 DU

0M284B4.5 is a black Buna-N (Nitrile) 70 Shore A O-Ring Cord Stock measuring a cross section of 0.177 in (4.5 mm). In service, this o-ring cord stock supports field repair of oversized or non-standard sealing grooves without a special tooling charge.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, most widely specified general-purpose sealing elastomer. The compound resists many alcohols, petroleum-based oils, and water. Applications involving strong acids or ozone and direct sunlight call for a different compound.

Maintenance and OEM teams specify it across general industrial maintenance, fluid power, and automotive.

Reference part number 0M284B4.5 when ordering; the item is sold by the foot. Review your operating media and conditions against this specification before installation.