-340 BLACK BUNA 50D O-RING

Part number H50340 is an AS568-340 black Buna-N (Nitrile) 50 Shore A O-Ring measuring an inside diameter of 3.35 in (85.09 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.77 in (95.76 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against many alcohols, petroleum-based oils, and propane and butane. Buna-N (Nitrile) delivers low compression set under sustained load and an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or ozone and direct sunlight.

It sees regular use in construction equipment, agricultural equipment, and general industrial maintenance.

Reference part number H50340 when ordering; the item is sold individually. Nominal inside diameter is listed as 3 3/8 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.