Parker Polyacrylate (ACM) O-Rings Compounds

Parker Polyacrylate (ACM) O-Rings Material Description:

Parker polyacrylate (ACM, acrylic rubber) o-rings have good resistance to mineral oil, oxygen and ozone. Water compatibility and cold flexibility of ACM are significantly worse than with nitrile.

Parker O-Ring Distributor

For over 50 years, Engineered Seal Products has partnered with Parker Seals. ESP is proud to be one of the FEW Premier Distributors to qualify as a "Parker Seal Technology Center (STC)".

What does Parker STC mean?

  • Proven Engineering Capability
  • Expert Material & Technical Support
  • ISO Quality Approval
  • Strong Financial Track Record
Parker Polyacrylate (ACM) Chemical Resistance:
  • Mineral oil (engine, gear box, ATF oil).
  • Ozone, weather and aging
Parker Polyacrylate (ACM) Not Compatible With:

Cannot be used in:

  • Glycol based brake fluid (Dot 3 and 4)
  • Aromatics and chlorinated hydrocarbons
  • Hot water, steam
  • Acids, alkalis, amines

Parker Polyacrylate (ACM) O-Rings Compound Numbering System:

Parker has one type of nomenclature used to reference polyacrylate (ACM) products.

Polymer Code (Single Letter)
Special Property Description (Single Letter)
Sequence Number (Three Letters)
Durometer Indicator (Two Digits)

Special Property Descriptions:

General Purpose
Low Compression Set
Ethylene Acrylate or (Vamac®)
Fuel Resistant or Fully Fluorinated
Higher Fluorine Content
NSF/FDA/WRAS Approvals
Internally Lubed
Mil/AMS Specifications
Low Temperature Flexible
Non-Black Compound

Parker Polyacrylate (ACM) O-Rings Compounds:

ESP Compound Number Datasheet Hardness (Shore A) Low Temp High Temp Color Features
AA150-70 PDF 70 +- 5 -5°F 350°F Black Engines & Transmission Seals.
AA154-75 PDF 75 +- 5 -5°F 350°F Black Engines & Transmission Seals

ASTM Designation
Shelf Life
15 Years
Hardness (Shore A) Range
40 - 90

Temperature ranges will apply to the majority of media for which the material is potentially recommended. With some media however, the service temperature range may be significantly different. ALWAYS TEST UNDER ACUTAL SERVICE CONDITIONS.

ESP’s shelf life recommendation is based on the ARP 5316 standard and intended to be utilized by those organizations who do not already have specific recommendations for the control of elastomeric seals. It should be noted that the packaging of the elastomeric seals prior to assembly into a product is an integral part of the controlled storage procedure. It provides a positive means of product identity from the time of manufacture, to the time of assembly.