Ordered as SH70177, this is an AS568-177 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring built to an inside diameter of 9.487 in (240.97 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 9.693 in (246.2 mm). The quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.
Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, low compression set under sustained load. Expect good resistance to greases and lubricants, water, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or polar solvents.
It sees regular use in fluid power, automotive, and construction equipment.
This item is sold individually under part number SH70177. Unit weight is approximately 5.025 g. 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 *568-177 BUNA 70 SQUARE CUT RINGS
Actual_CS 0.103 inch (2.62 mm)
Actual_ID 9.487 inch (240.97 mm)
Actual_OD 9.693 inch (246.2 mm)
ProductCode Description O-Rings - Square/Quad - Commodity