APG stocks the SB-H70352-5, an AS568-352 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 4.85 in (123.19 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.27 in (133.86 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. Source specification: 0.210CSX4.850"IDX5.270"OD.
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. This material stands up to petroleum-based oils, greases and lubricants, and water. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or strong acids.
You will find this material specified across construction equipment, hydraulic and pneumatic systems, and general industrial maintenance.
SB-H70352-5 ships by the bag. 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 Buna 70-352-Black-Pk5
uf_description2 0.210"CSX4.850"IDX5.270"OD
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 4.85 inch (123.19 mm)
Actual_OD 5.27 inch (133.86 mm)
ProductCode Description O-Rings - Bagged - Commodity