Polyacrylate O-Rings » Ethyl-Acrylate Orings and ACM Orings

Polyacrylates are copolymers of ethyl and acrylates which exhibit excellent resistance to petroleum fuels and oils and can retain their properties when sealing petroleum oils at continuous high temperatures up to 300 °F. Polyacrylate orings are frequently used in automotive steering and automatic transmission systems. The Polyacrylate o-ring is commonly referred to as a ethyl-acrylate o-ring or ACM o-rings. Columbia offers Polyacrylate o-rings as a speciality oring compound.

ACM O-rings
Polyacrylate O-Rings are speciality o-rings and only available as a special order. Please submit an RFQ for pricing, and availability.
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Polyacrylate Orings » Chemical Compatibility Overview

Polyacrylate
Chemical Resistance
Very
Good
Good
Fair
Poor
Amines       4
Aromatic Hydrocarbons       4
Chlorinated Hydrocarbons       4
Dilute Acids     3  
Dilute Alkalis     3  
Glycol Based Brake Fluids (Dot 3, 4)       4
Hot Water / Steam       4
Hydraulic Fluids (ester)       4
Ketones     3  
Mineral oil (engine, gear box, ATF oil) 1      
Petroleum Oils (Below 250ºF)   2    
Sulfur Containing Oils   2    
Transmission Fluids (Type A) 1      

Polyacrylate Compound » Chemical Compatibility Lookup

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*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.

Polyacrylate O-Rings » Physical Properties Overview

Polyacrylate
Physical Properties
Very
Good
Good
Fair
Poor
Abrasion Resistance   2    
Acid Resistance       4
Chemical Resistance       4
Cold Resistance       4
Compression Set Resistance     3  
Dynamic Properties     3  
Electrical Properties     3  
Elongation     3  
Flame Resistance       4
Heat Resistance 1      
Impermeability 1      
Oil Resistance 1      
Ozone Resistance 1      
Tear Resistance     3  
Tensile Strength     3  
Water / Steam Resistance       4
Weather Resistance 1      
*The chemical compatibility and physical properties are listed as general characteristics of the polyacrylate o-ring compound. Speciality compounds can be derived to enhance or modify the performance to meet o-ring's application needs.

Polyacrylate Compound » Compound Attributes

Chemical Description Polyacrylate rubber
Abbreviations (ASTM 1418) ACM
ISO / DIN ACM
Other Trade Names ACM
ASTM D2000 Designations EH
Low Temperature Range -60°F / -51°C
High Temperature Range 300°F / 149°C
*The polyacrylate o-ring compound attributes are used to outline the basic properties. Polyacrylate o-ring attributes can be adjusted by modifying the basic compound.

Custom Polyacrylate O-Rings

Polyacrylate O-rings 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 o-ring gland design here. You can find assistance with o-ring design here. To request a quote on your o-ring specifications please submit a RFQ here.

Standard AS568 Polyacrylate O-Rings

All polyacrylate AS568 o-rings have three measurement types. First, a nominal inch reference, then actual inch sizes, and finally the metric size displayed in millimeters. Polyacrylate o-rings 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 Polyacrylate O-Rings

Polyacrylate O-rings can be made in several metric sizes. Polyacrylate metric O-rings are cataloged by their cross section and inside diameter. Columbia references the metric polyacrylate 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.
O-ring Measurement Chart
Products Examples by Category
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