140X4MM Buna-N Nitrile (70A) Metric O-Ring, 70A Durometer - Precision-Molded Replacement Sealing Ring for Pumps, Valves & Fittings

Chasing a leak on metric equipment and need the exact o-ring to seal it? A worn or wrong-size o-ring lets fluid weep past the joint and drops pressure.

This Beaver Island Parts Company replacement o-ring is a single 140 x 4 mm metric o-ring (140mm inside diameter by 4mm cross-section), molded in 70A Buna-N nitrile rubber.

Full Compatibility: 140 x 4 mm is a common metric o-ring size used across pumps, filters, valves and housings worldwide. If your application calls for a 140mm ID x 4mm section o-ring, this is the size.
Installation Note: Clean the groove, inspect the sealing surface, seat the new o-ring without twisting it, and lubricate before assembly.
Pro Tip: Apply Aqua Flex lubricant before installation to ease seating and extend seal life.

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