Product Description

Nitrile MIL-R-6855 Class 1

A military grade nitrile product that has been designed to meet the nitrile MIL-R-6855 Class 1 Specification serving as a fuel resistant rubber material. Made in the USA.

Samples available upon request.

Product Image

Key Aspects

Temperature Range: -50°F to +220°F
Durometer Range (Shore A ± 5): 40 to 80
Tensile Range (typical psi.): 1500 to 2100
Elongation Range (typical %): 200 to 600
Finishes Available: Smooth
Talc: Talc-Free Available
Specification: MIL-R-6855 Class 1

We comply with the Buy American Act requirements.

Advanced Technical Details

Specification Durometer
(Shore A ± 5)
Tensile (psi) Ultimate
Elongation (%)
Estimated Weight
Per Linear Foot
(1/8" x 36")
Typical Typical
Class 1 Grade 40
40 1/64 - 1/4 36, 48 1500 600 -50°F to +220°F 2.15 lb
Class 1 Grade 50
50 1/64 - 1/4 36, 48 1800 550 -50°F to +220°F 2.38 lb
Class 1 Grade 60
60 1/64 - 1/4 36, 48 2100 500 -50°F to +220°F 2.42 lb
Class 1 Grade 70
70 1/64 - 1/4 36, 48 2000 300 -50°F to +220°F 2.5 lb
Class 1 Grade 80
80 1/64 - 1/4 36, 48 1800 200 -50°F to +220°F 2.46 lb

Compound Numbers: 040P0471, 050P0472, 060P0473, 070P0474, 080P0475

Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. The named product polymer is not necessarily the primary polymer representing the highest percentage of the polymer blend. Determination of the suitability of the goods for the uses and applications contemplated by Buyer and others shall be the sole responsibility of the Buyer or user. No guaranty is given with respect to length of service on any particular application. Suggestions or recommendations made by Seller in its product literature concerning uses or applications of the goods are believed to be reliable, but Seller makes no warranty or guaranty of results to be obtained since the conditions of the use and application by Buyer and others are beyond Seller’s control. The specification listed here, MIL, represents the United States Military Departments and the Defense Agencies’ standardization documents that have been developed and used for products, materials, and processes that have multiple applications to promote commonality and interoperability and to limit the variety of items in the military supply system. Their website can be found here:

View complete Terms & Conditions of Sale for suitability of use and formulations

Other Military Specification Grade Sheet Rubber Products

Nitrile MIL-G-1149

  • Polymer: Nitrile
  • Durometer: 50
  • Temperature Range: -40°F to +200°F
  • Specs: MIL-G-1149 Type 1 Class 5

MIL-R-6855 Class 2

  • Polymer: Neoprene
  • Durometer: 30 to 80
  • Temperature Range: -50°F to +220°F
  • Specs: MIL-R-6855 Class 2


  • Polymer: Nitrile
  • Durometer: 40
  • Temperature Range: -50°F to +220°F
  • Spec: MIL-R-2765


  • Polymer: EPDM
  • Durometer: 85
  • Temperature Range: -40°F to +220°F
  • Specs: MIL-R-21252