APG stocks the H50019, an AS568-019 black Buna-N (Nitrile) 50 Shore A O-Ring built to an inside diameter of 0.801 in (20.35 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.941 in (23.9 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.
As a material, Buna-N (Nitrile) is valued for strong abrasion and tear resistance, reliable performance in both static and dynamic service. This material stands up to greases and lubricants, many alcohols, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or automotive brake fluid call for a different compound.
Maintenance and OEM teams specify it across general industrial maintenance, hydraulic and pneumatic systems, and construction equipment.
This item is sold individually under part number H50019. Review your operating media and conditions against this specification before installation.
Description -019 BLACK BUNA 50D O-RING
Actual Cross Section 0.07 inch (1.78 mm)
Actual Inside Diameter 0.801 inch (20.35 mm)
Actual Outside Diameter 0.941 inch (23.9 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity