SMS 1588 35.1x1.6 Buna-N Nitrile (90A) Metric O-Ring, 90A Durometer, 35.1mm ID x 1.6mm CS (1.382" x 0.063", 38.3mm OD) - Precision-Molded Replacement Sealing Ring for Pumps, Valves & Fittings

FINAL SALE - NO RETURNS. THIS IS A STANDARD CATALOGUE SIZE; CONFIRM YOUR INSIDE DIAMETER, CROSS-SECTION AND MATERIAL BEFORE ORDERING.

Every dimension, material and durometer for this o-ring is published above. Because these are standard catalogue sizes chosen by measurement rather than by pump model, they ship as final sale. If we send the wrong item, or it arrives damaged or defective, we replace it free of charge - that never changes.

Chasing a leak or a slow drip and need the exact metric o-ring size to seal it for good? A worn or wrong-size o-ring lets fluid weep past the joint, drops pressure, and can damage the equipment around it.

This Beaver Island Parts Company replacement o-ring is a single SMS 1588 35.1x1.6 o-ring, a standard metric sealing size measuring 35.1mm inside diameter by 1.6mm cross-section (1.382" ID x 0.063" CS, 38.3mm outer diameter), molded in 90A Buna-N Nitrile rubber.

Full Compatibility: SMS 1588 35.1x1.6 is an international-standard o-ring size used across pumps, valves, filters, fittings and machinery worldwide. If your application calls for a 35.1mm x 1.6mm 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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