Delivering Fluid Sealing Solutions Since 1972

Neoprene O Rings

Neoprene O Rings UK (Chloroprene CR)

M Barnwell Services, the UK’s largest independent supplier of fluid sealing products stock a vast range of Neoprene O Rings. With over 50 million O Rings and Back-Up Rings in stock, we can supply to your specific requirements.

Chloroprene (CR) elastomers are homopolymers of chloroprene (chlorobutadiene) and were one of the first synthetic rubbers to be manufactured for sealing use.

Our range of Neoprene O Rings has a remarkable resistance to ageing, ozone, and weathering. They have good mechanical features and present an average resistance to mineral oils. Neoprene O Rings are frequently used in Refrigeration because of their excellent resistance to Freon® (ammonia) and their extensive range of operating temperatures. They are also known as Chloroprene O Rings.

The temperature range can be from –40°C to +120°C (intermittent/compound-specific up to +150°C).

This makes them ideal for industries such as Agriculture, EnergyMarine, Automotive and Earth Moving & Construction.

For further material details about our range of materials visit our Material Properties page.

If you would like more information about our range of Neoprene (Chloroprene O Rings) Seals download our catalogue, or contact a member of the team.

E & OE.


Neoprene (Chloroprene CR)


No limitation to dimensions, over 10,000 different sizes available from stock

Temperature Range

-40°C to +120°C (intermittent/compound-specific up to +150°C)

Shore Hardness

70 Shore A


Black as standard


O Ring Metric & Imperial Kits, Selection Boxes, Splicing Kits & Top-up Bags are available.
Bespoke O Ring Kits and Selection Boxes also available.

Associated Products

Encapsulated O Rings (FEP/PFA), Lube, Gauge/O Ring material tester, Quad Rings (X-Rings)/Nu-lip Rings, O Ring Cord, Tube, Anti-extrusion Rings (Back-up Rings), Splicing Kits, Lubricants & Adhesives.