H90245 is an AS568-245 black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 4.359 in (110.72 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.637 in (117.78 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
Expect good resistance to water, petroleum-based oils, and greases and lubricants. Buna-N (Nitrile) offers low compression set under sustained load and an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.
Common environments for this compound include automotive, general industrial maintenance, and construction equipment.
Stocked as H90245 and sold individually. Unit weight is approximately 4.5496 g. 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.
Description -245 BLACK BUNA 90D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 4.359 inch (110.72 mm)
Actual Outside Diameter 4.637 inch (117.78 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity