Parker Chloroprene, Neoprene® (CR) O-Rings

Parker Chloroprene (CR), Neoprene® O-Rings Material Description:

Chloroprene was the first synthetic rubber developed commercially and exhibits generally good ozone, aging and chemical resistance. It has good mechanical properties over a wide temperature range.

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 (CR), Neoprene® Chemical Resistance:
  • Paraffin based mineral oil with low DPI
  • Silicone oil and grease
  • Water and water solvents at low temperatures
  • Refrigerants
  • Ammonia
  • Carbon dioxide
  • Improved ozone, weathering and aging resistance
  • compared with nitrile
Parker (CR), Neoprene® Not Compatible With:

Cannot be used in:

  • Aromatic hydrocarbons (benzene).
  • Chlorinated hydrocarbons (trichloroethylene).
  • Polar solvents (ketones, esters, ethers).

Chloroprene (CR), Neoprene® O-Rings Compound Numbering System:

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

Polymer Code (Single Letter)
Sequence Number (Four Digits)
Durometer Indicator (Two Digits)

- OR -

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

Chloroprene (CR), Neoprene® O-Rings Compounds:

Parker Compound Number Datasheet Hardness (Shore A) Low Temp High Temp Color Recommended For
C0267-50 PDF 50 +- 5 -60 250 Black MIL-G-1149 Ty I Cl I, AMS 3208, Low Temperature
C0557-70 PDF 70 +- 5 -35 250 Black Drive Belt Applications, General Purpose
C0873-70 PDF 70 +- 5 -35 225 Black Refrigerant Gases, Low Extractibles, Low Compression Set
C0944-70 PDF 70 +- 5 -35 250 Red General Purpose
C1124-70 PDF 70 +- 5 -60 250 Black AMS 3209, Low Temperature
C1276-70 PDF 70 +- 5 -35 250 Black Super Neoprene, Low Compression Set
CL172-70 PDF 70 +- 5 -35 225 Black Internally Lubed
C1278-80 PDF 80 +- 5 -35 250 Black Super Neoprene, Low Compression Set

ASTM Designation
Shelf Life
5 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.