Ordered as H50313, this is an AS568-313 black Buna-N (Nitrile) 50 Shore A O-Ring supplied with an inside diameter of 0.662 in (16.81 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.082 in (27.48 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
The compound resists many alcohols, hydraulic fluids, and petroleum-based oils. Buna-N (Nitrile) offers low compression set under sustained load, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to polar solvents or ketones will shorten service life.
Common environments for this compound include automotive, fluid power, and construction equipment.
Order part number H50313, sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description -313 BLACK BUNA 50D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 0.662 inch (16.81 mm)
Actual Outside Diameter 1.082 inch (27.48 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity