3.5MM CS X 140MM ID BLACK BUNA 70D

The H3.5X140 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 140 mm (5.512 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 147 mm (5.79 in). This o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) is valued for low compression set under sustained load and an economical choice for high-volume maintenance programs. This material stands up to petroleum-based oils, propane and butane, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in polar solvents or strong acids.

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

Reference part number H3.5X140 when ordering; the item is sold individually. Unit weight is approximately 5.2972 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.