-239 BLACK BUNA 70D O-RING

The H70239 is an AS568-239 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 3.609 in (91.67 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.887 in (98.73 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The material holds up against propane and butane, greases and lubricants, and hydraulic fluids. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with ozone and direct sunlight or strong acids.

Maintenance and OEM teams specify it across agricultural equipment, automotive, and hydraulic and pneumatic systems.

Reference part number H70239 when ordering; the item is sold individually. Unit weight is approximately 0.0036 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.