The H70409 is an AS568-409 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 2.475 in (62.87 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 3.025 in (76.84 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
The material holds up against greases and lubricants, many alcohols, and petroleum-based oils. Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in strong acids or ozone and direct sunlight.
Typical settings include general industrial maintenance, agricultural equipment, and automotive.
This item is sold individually under part number H70409. Unit weight is approximately 0.0104 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -409 BLACK BUNA 70D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 2.475 inch (62.87 mm)
Actual Outside Diameter 3.025 inch (76.84 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity