This o-ring is supplied in AS568-253 black Buna-N (Nitrile) 50 Shore A built to an inside diameter of 5.359 in (136.12 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.637 in (143.18 mm), catalogued under part number H50253. It delivers dependable bidirectional sealing in a compact groove envelope.
Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and low compression set under sustained load. The compound resists water, greases and lubricants, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.
Common environments for this compound include fluid power, general industrial maintenance, and automotive.
H50253 ships individually. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -253 BLACK BUNA 50D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 5.359 inch (136.12 mm)
Actual Outside Diameter 5.637 inch (143.18 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity