.312" C/S (5/16") (8 MM)

Part number 0284312 is a black Buna-N (Nitrile) 70 Shore A O-Ring Cord Stock with a cross section of 0.312 in (8 mm). An o-ring cord stock lets you fabricate a custom-size seal on site by cutting and splicing to the required circumference.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, economical choice for high-volume maintenance programs. This material stands up to many alcohols, hydraulic fluids, and greases and lubricants. Verify compatibility before use with automotive brake fluid or ketones.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, automotive, and agricultural equipment.

This item is sold by the foot under part number 0284312. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.