This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 135 mm (5.315 in), a cross section of 7 mm (0.276 in), and an outside diameter of 149 mm (5.87 in), catalogued under part number H7X135. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.
As a material, Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The compound resists petroleum-based oils, propane and butane, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or strong acids will shorten service life.
Maintenance and OEM teams specify it across agricultural equipment, fluid power, and hydraulic and pneumatic systems.
H7X135 ships individually. Unit weight is approximately 20.6 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
description 7MM CS X 135MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 149 mm (5.87 inch)
Actual_CS 7 mm (0.276 inch)
Actual_ID 135 mm (5.315 inch)
ProductCode Description O-Rings - Metric - Commodity