-348 BLACK BUNA 70D O-RING

Ordered as H70348, this is an AS568-348 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 4.35 in (110.49 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.77 in (121.16 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.

The compound resists petroleum-based oils, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

Typical settings include fluid power, construction equipment, and hydraulic and pneumatic systems.

Reference part number H70348 when ordering; the item is sold individually. Unit weight is approximately 9.914 g and nominal inside diameter is listed as 4 3/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.