4MM CS X 77MM ID BLACK BUNA 70D

The H4X77 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 77 mm (3.031 in), a cross section of 4 mm (0.157 in), and an outside diameter of 85 mm (3.35 in). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. This material stands up to petroleum-based oils, many alcohols, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

Typical settings include automotive, general industrial maintenance, and agricultural equipment.

H4X77 ships individually. Unit weight is approximately 3.9459 g. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.