O Rings

O-rings are one of the simplest, yet most engineered, precise, and useful seal designs ever developed.

They are one of the most common and important elements of machine design.

O-rings are available in various metric and inch standard sizes.

Sizes are specified by the inside diameter and the cross section diameter (thickness).

cdk seals products o rings

In the US the most common standard inch sizes are per SAE AS568C specification (e.g. AS568-214). ISO 3601- 1:2008 contains the most commonly used standard sizes, both inch and metric, worldwide.

The UK also has standards sizes known as BSsizes, typically ranging from BS001 to BS932. Several other size specifications also exist.

Elastomers include Nitrile, Viton, Silicone, Hnbr, and Explosive decompression material, Ptfe, Epdm and Polyurethane.

Shore hardness can be between 40IRHD to 95 IRHD and in some instances coloured rings can be manufactured. Variants on the o ring would be the square section ring and the quad or X ring.

Box Kits

CDK have produced customised sealing kits for industry in many cases containing non seal components as well as providing the standard available selections.

Standard O ring selection boxes exist for particular industries, such as plumbing, and also cover the more commonly used metric and imperial sizes.

Bonded seals can also be supplied as BSP or metric popular sizes held within a selection box. Various other selections exist including copper washers, circlips; roll pins, cotter pins fibre washers e clips, o clips and many others.

cdk seals products - o rings and box kits

Contact Us

Please contact us to discuss your O Rings & Box Kits requirements.

Our experienced team is waiting to help!

Contact us CDK seals - keyboard