3.53MM CS X 53.98MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 53.98 mm (2.125 in), a cross section of 3.53 mm (0.139 in), and an outside diameter of 61.04 mm (2.4 in), catalogued under part number H3.53X53.98. It creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. It resists propane and butane, water, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where ozone and direct sunlight or polar solvents are present.

Maintenance and OEM teams specify it across construction equipment, agricultural equipment, and general industrial maintenance.

Stocked as H3.53X53.98 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.