Nitrile (NBR) O-Ring Assortment Kit, Metric, 1200 Pieces, 24 Sizes, in Storage Box

1200 black nitrile (NBR) O-rings in 24 metric sizes, from 6 x 1.5 mm to 28 x 3.1 mm (inside diameter x cross section), sorted in a clear 24 compartment box with the size printed on each compartment.

Filter bowl and housing O-rings, valve seals and fitting O-rings get flattened every time an element is changed. A worn O-ring is the usual reason a new filter weeps at the bowl, so keeping a box of the common sizes on the bench means the seal is renewed with the element, not after the leak.

Technical properties & sizes

Applications & use cases

Filter element changes
Replace the bowl or housing O-ring every time the element is changed. Lubricate the new ring with clean oil before fitting so it seats without twisting.

Hydraulic fittings
Plugs and adaptors that seal with an O-ring weep once the ring has taken a set. A matching size from the box stops the leak without waiting for a part.

Compressed air lines
Drain fittings, quick couplings and regulator bowls on air lines use small metric O-rings that are easy to lose and hard to buy one at a time.

Matching an unknown seal
Measure the inside diameter and the cross section of the old ring with a caliper and pick the nearest size from the chart on the lid.

Price beat guarantee

We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:

Our price of USD 9.36 is 20% to 67% less than these sellers.

Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.

Frequently asked questions