O-Rings & Seal Assortments
O-ring assortments in SAE and metric sizes, packed separately because a workshop that buys one box almost always wants one system, not both. Each size is specified by inside diameter, cross-section and material, and the material is not cosmetic: NBR and FKM are not interchangeable on the same fluid.
Also searched as: o ring assortment sae, metric o ring kit, nbr o rings, o ring seal kit 826 pcs
2 ready part numbers here, each with photos, dimensions, fitment, packing and a quote form.
What decides the price
In order of impactBoth are needed. An O-ring matched on OD alone seals on the wrong surface and weeps.
NBR covers most oils and air. FKM takes heat and chemicals NBR cannot. Putting NBR where FKM was specified is a leak with a date on it.
Shore hardness and the surface finish of the groove decide whether the ring seals statically or dynamically. We publish both when the factory does.
Worth checking before you order
The two systems look close and are not. A 1/8 in cross-section is not 3 mm, and the difference is the leak.
O-rings are specified by inside diameter and cross-section. Measuring the outside of a stretched ring gives a size that will not seat.
Selection data
Confirmed per orderReady part numbers
Photos and specs per lineQuestions
Is this one box or two?+
Two. The SAE set and the metric set are separate products with separate part numbers.
Can I get FKM instead of NBR?+
Quoted separately. Tell us the fluid and the temperature and we confirm which material is the right answer.
Send the specification, not the product name.
Grade, size, thread standard and coating are what a quote is built from. A product name alone produces a price that changes twice before the order.