The H50317 is an AS568-317 black Buna-N (Nitrile) 50 Shore A O-Ring measuring an inside diameter of 0.912 in (23.16 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.332 in (33.83 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.
Expect good resistance to water, greases and lubricants, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or ketones are present.
You will find this material specified across hydraulic and pneumatic systems, agricultural equipment, and general industrial maintenance.
H50317 ships individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description -317 BLACK BUNA 50D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 0.912 inch (23.16 mm)
Actual Outside Diameter 1.332 inch (33.83 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity