The H50247 is an AS568-247 black Buna-N (Nitrile) 50 Shore A O-Ring supplied with an inside diameter of 4.609 in (117.07 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.887 in (124.13 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
As a material, Buna-N (Nitrile) is known for strong abrasion and tear resistance, low compression set under sustained load. This material stands up to greases and lubricants, hydraulic fluids, and many alcohols. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.
It sees regular use in construction equipment, agricultural equipment, and hydraulic and pneumatic systems.
Stocked as H50247 and sold individually. 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 -247 BLACK BUNA 50D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 4.609 inch (117.07 mm)
Actual Outside Diameter 4.887 inch (124.13 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity