*The neoprene o-ring compound attributes are used to outline the basic properties. Neoprene o-ring attributes can be adjusted by modifying the basic compound.

*Due to the number of interacting forces, it is STRONGLY RECOMMENDED THAT YOUR ELASTOMER SELECTION BE RIGOROUSLY TESTED IN THE ACTUAL APPLICATION, performance assumptions must be checked so that you are certain that all variables have been carefully considered.

*The chemical compatibility and physical properties are listed as general characteristics of the neoprene o-ring compound. Speciality compounds can be derived to enhance or modify the performance to meet o-ring’s application needs.

Neoprene Orings » Physical Properties Overview

Chemical Description	Chloroprene rubber
Abbreviations (ASTM 1418)	CR
ISO / DIN	CR
Other Trade Names	Chloroprene
ASTM D2000 Designations	BC, BE
Low Temperature Range	-40°F / -40°C
High Temperature Range	250°F / 121°C

Neoprene Physical Properties	Very Good	Good	Fair	Poor
Abrasion Resistance		2
Acid Resistance			3
Chemical Resistance			3
Cold Resistance			3
Compression Set Resistance			3
Dynamic Properties			3
Electrical Properties			3
Elongation		2
Flame Resistance		2
Heat Resistance		2
Impermeability		2
Oil Resistance			3
Ozone Resistance		2
Tear Resistance			3
Tensile Strength		2
Water / Steam Resistance			3
Weather Resistance	1

Neoprene O-Ring Compound » Compound Attributes

Custom Neoprene Orings

O-ring Measurement Chart

Neoprene Orings can be made in custom sizes to fit any application specific needs. Our engineering staff can review your application and design a solution that satisfies those requirements. You can find assistance with oring gland design here. You can find assistance with oring design here. To request a quote on your oring specifications please submit a RFQ here.

Standard AS568 Neoprene O-Rings

All stocked neoprene AS568 o-rings have three measurement types. First, a nominal inch reference, then actual inch sizes, and finally the metric size displayed in millimeters. Neoprene o-rings are stocked and cataloged by their AS568 number. This number references the Aerospace Standard 568 (AS 568) which was published by the SAE (Society of Automotive Engineers). Each o-ring is assigned a dash number which correlates directly to an exact o-ring size. You may view a complete chart of these o-ring sizes here.

Standard Metric Neoprene O-Rings

Neoprene O-rings are available in several metric sizes. Neoprene metric O-rings are cataloged by their cross section and inside diameter. Columbia references the metric neoprene o-rings by the compound number and the cross section along with the inside diameter. You may view a complete chart of the metric o-ring sizes here.

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Neoprene O-Rings » Chloroprene Orings and CR Orings

Neoprene is a homopolymer of chlorobutadiene and unusual in that it is moderately resistant to both petroleum oils and weather (ozone, UV, oxygen). Neoprene o-rings are commonly used in the refrigeration industry due to excellent resistance to ammonia, Freon® and the o-rings wide range of operating temperatures (- 40 °F to 250 °F). The neoprene o-ring is commonly referred to as a chloroprene o-ring or CR o-ring. Columbia offers a complete selection of both the standard AS568 neoprene o-rings and metric neoprene o-rings sizes. Columbia can also develop custom Neoprene O-rings to customer applications or specifications.

Neoprene Orings » Chemical Compatibility Overview

Neoprene Chemical Resistance	Very Good	Good	Fair	Poor
Ammonia	1
Aromatic Hydrocarbons				4
Brake Fluids Non-Petroleum			3
Carbon Dioxide	1
Chlorinated Hydrocarbons				4
Glycol Base Brake Fluids			3
Petroleum, Crude		2
Polar Solvents (Ketones)				4
Propane, Butane & Fuel		2
Refrigerants	1
Silicone Oils & Greases	1
Steam to 500ºF				4
Water	1

Neoprene Compound » Chemical Compatibility Lookup


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