Ordered as H50437, this is an AS568-437 black Buna-N (Nitrile) 50 Shore A O-Ring supplied with an inside diameter of 5.975 in (151.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.525 in (165.74 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.
As a material, Buna-N (Nitrile) offers strong abrasion and tear resistance, low compression set under sustained load. The material holds up against greases and lubricants, propane and butane, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).
It sees regular use in fluid power, general industrial maintenance, and automotive.
This item is sold individually under part number H50437. Nominal inside diameter is listed as 6 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -437 BLACK BUNA 50D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 5.975 inch (151.77 mm)
Actual Outside Diameter 6.525 inch (165.74 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity