3.5MM CS X 135MM ID BLACK BUNA 70D

The H3.5X135 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 135 mm (5.315 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 142 mm (5.59 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

This material stands up to greases and lubricants, petroleum-based oils, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for low compression set under sustained load, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or automotive brake fluid.

Common environments for this compound include agricultural equipment, hydraulic and pneumatic systems, and fluid power.

Reference part number H3.5X135 when ordering; the item is sold individually. Unit weight is approximately 5.21 g. Review your operating media and conditions against this specification before installation.