Parker Urethane (AU) O-Rings

Parker Urethane (AU) O-Ring Material Description:

Urethane O-Rings provide strength and wear resistance greater than your typical rubber materials and are good for some higher pressure applications. The material is less elastic and has limitations when it comes to some physical charachteristics. The strong abrasion resistance make it a good consideration for tube fittings and threaded applications.

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 (AU) Chemical Resistance:
  • Pure aliphatic hydrocarbons (propane, butane).
  • Mineral oil and grease.
  • Silicone oil and grease.
  • Water up to 50°C (125°F).
Parker (AU) Not Compatible With:
  • Ketones, esters, ethers, alcohols, glycols.
  • Hot water, steam, alkalis, amines, acids.

Parker Urethane (AU) O-Ring Compound Numbering System:

Parker has one type of nomenclature used to reference Urethane (AU) products.

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

Parker Urethane (AU) O-Ring Compound:

Parker Compound Number Datasheet Hardness (Shore A) Low Temp High Temp Color Recommended For
P0642-70 PDF 70 +- 5 -40 180 Black Drive Belt Applications, Millable

ASTM Designation
Shelf Life
5 Years
Hardness (Shore A) Range
65 - 75

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.