Viton® and fluoroelastomer quality

viton seals

Fluoroelastomer materials and manufacturing processes vary widely. Cheaper seals could cost you far more in the long run.

Viton® fluoroelastomer from DuPont™ is known for its heat resistance (400°F/200°C) and broad chemical compatibility. Resistance to aggressive fuels, solvents and chemicals makes it popular with manufacturers of packaging machinery and repairers of mechanical seals.

Contact us to find out which type of Viton® one is best for your application.

We source AS568 Viton® and fluoroelastomer O-rings from US factories. All material complies with AMS7276/MIL-R-25988 and manufacturers are QPL1 listed and UL2 approved.

Conformance to dimension specifications and surface quality are assured through automated quality control using Basler Vario video inspection systems

Click on the Logo for more information Body or Standard Summary
Underwriters Laboratory UL The Underwriters Laboratory is a global independent safety science company which certifies, validates, tests, inspects, audits, and advises and trains. 


Policy Review Institute (PRI)

The Qualified Products List (QPL) is published by Washington State Department of Transportation

To gain QPL listing a supplier must have received a PRI product qualification approval letter to a specific standard for specific product designations and plant locations.

Milspec US Dept of Defence MIL-R-25988

United States defense standard, often called a military standard, "MIL-STD", "MIL-SPEC", or (informally) "MilSpecs", is used to help achieve standardization objectives by the U.S. Department of Defense.(source wikipedia).

The US Military has exited the role of specification setting.

While MIL-R-25988 is still sometimes quoted, it has been superceeded by AMS7276

•Mil Spec MIL-R-83248 is replaced as follows, Type 1 (O-rings and Compression Seals)
Class 1 : 75±5 Durometer is now AMS7276G
Class 2: 90±5 Durometer is now AMS7259D
SAE International AMS7276  Mil Specs have converted to the Society of Automotive Engineers (SAE) Aerospace Material Specifications (AMS). It is the most widely used specification for fluoroelastomers in the USA and around the world.

Fluid Seals is committed to being the leader in supply of high quality o-rings.

Fluid Seals is the Australian Distributor of DuPont™ Vespel®, Kalrez® High Performance Elastomers and Krytox® High Performance Lubricants.