Nitrile MIL-R-6855 / MIL-PRF-6855 Class 1
A military grade nitrile product that has been designed to meet the nitrile MIL-R-6855 / MIL-PRF-6855 Class 1 Specification serving as a fuel resistant rubber material.
MIL-R-6855 Class 1 is equivalent to MIL-PRF-6855 Class 1. Made in the USA.
Samples available upon request.
| Temperature Range: | -50°F to +220°F |
| Durometer Range (Shore A ± 5): | 40 to 80 |
| Tensile Range (typical): | 1500 psi to 2100 psi |
| Elongation Range (typical): | 200% to 600% |
| Finishes Available: | Smooth |
| Talc: | Talc-Free Available |
| Specification: | MIL-R-6855 Class 1 / MIL-PRF-6855 Class 1 |
| Compound Number(s) | Part Number(s) | |||
|---|---|---|---|---|
| 040P0471 | 0044222957 | 0044222960 | 0044222964 | 0044222972 |
| 0044222974 | 0044222976 | 0044229534 | 0044256009 | |
| 0044262738 | 0044262739 | 0044262740 | 0044262742 | |
| 0044262743 | 0044262745 | — | — | |
| 050P0472 | 0044223496 | 0044223498 | 0044226591 | 0044226992 |
| 0044227013 | 0044262748 | 0044262749 | 0044262760 | |
| 0044262761 | 0044262762 | 0044262763 | 0044262764 | |
| 0044262765 | 0044262766 | — | — | |
| 060P0473 | 0044224304 | 0044224309 | 0044224311 | 0044224315 |
| 0044224318 | 0044224321 | 0044224327 | 0044224330 | |
| 0044224331 | 0044224334 | 0044224336 | 0044262767 | |
| 0044262768 | 0044262769 | — | — | |
| 070P0474 | 0044224901 | 0044224904 | 0044224906 | 0044224907 |
| 0044225662 | 0044227648 | 0044234615 | 0044262770 | |
| 0044262771 | 0044262772 | 0044262773 | 0044262774 | |
| 0044262775 | 0044262776 | — | — | |
| 080P0475 | 0044262777 | 0044262778 | 0044262779 | 0044262780 |
| 0044262781 | 0044262782 | 0044262783 | 0044262784 | |
| 0044262785 | 0044262786 | 0044262787 | 0044262788 | |
| 0044262789 | 0044262790 | — | — | |
We comply with the Buy American Act requirements.
WARCO manufactured materials are compliant Build America, Buy America (BABA) requirements.
| Specification | Durometer Hardness (Shore A ± 5) |
Thickness (inches) |
Width (inches) |
Tensile | Ultimate Elongation |
Temperature Range |
Estimated Weight Per Linear Foot (1/8″ x 36″) |
|---|---|---|---|---|---|---|---|
| min | min | ||||||
| MIL-R-6855 / MIL-PRF-6855 Class 1 Grade 40 |
40 | 1/64 – 1/4 | 36, 48 | 1100 psi | 450% | -67°F to +220°F | 2.15 lb |
| MIL-R-6855 / MIL-PRF-6855 Class 1 Grade 50 |
50 | 1/64 – 1/4 | 36, 48 | 1200 psi | 350% | -67°F to +220°F | 2.38 lb |
| MIL-R-6855 / MIL-PRF-6855 Class 1 Grade 60 |
60 | 1/64 – 1/4 | 36, 48 | 1300 psi | 300% | -67°F to +220°F | 2.42 lb |
| MIL-R-6855 / MIL-PRF-6855 Class 1 Grade 70 |
70 | 1/64 – 1/4 | 36, 48 | 1400 psi | 200% | -67°F to +220°F | 2.5 lb |
| MIL-R-6855 / MIL-PRF-6855 Class 1 Grade 80 |
80 | 1/64 – 1/4 | 36, 48 | 1600 psi | 150% | -67°F to +220°F | 2.46 lb |
Compound Number: 040P0471(40P471), 050P0472(50P472), 060P0473(60P473), 070P0474(70P474), 080P0475(80P475)
Unsure on how to read our compound number? Read the page, “How to Read a Compound Number”.
Rubber Roll Width
WARCO Sheet rubber rolls are available in 36” or 48” width. Custom widths available up to 55″. Rolls are untrimmed and can measure approximately 3” in additional width. Trimmed rolled rubber is available upon request.
Custom widths are available, please call (714-532-3355) for details.
Standard Minimum Order Quantity
The minimum order quantity for a standard WARCO Sheet rubber is one roll. For custom applications, please call (714-532-3355) for more information.
Rubber Roll Lengths
Standard Roll approximate length ±10%. Products may vary, please see product listing for standard roll lengths.
Sheet Roll Lengths:
- 1/64″ thick – 180 feet
- 1/32” thick – 150 feet
- 1/16” thick – 100 feet
- 3/32” thick – 65 feet
- 1/8” thick – 50 feet
- 3/16” thick – 30 feet
- 1/4” thick – 25 feet
- 5/16” thick – 20 feet
- 3/8” thick – 16.5 feet
- 1/2” thick – 12.5 feet
Sheet Rubber Thickness Tolerances
Closer tolerances and Custom thicknesses are available and can be priced on request.
WARCO Thickness Tolerance – Standard RMA
- 0.031” & thinner: ± 0.010″
- 0.032″ to 0.061″: ± 0.012″
- 0.062″ to 0.124″: ± 0.016″
- 0.125″ to 0.186″: ± 0.020″
- 0.187″ to 0.374″: ± 0.031″
- 0.375″ to 0.500″: ± 0.047″
- 0.501″ to 0.750″: ± 0.094″
- 0.751″ & thicker: ± 10%
Sheet Rubber Finish
Unless otherwise noted, sheet rubber has a standard smooth finish. Textured (fabric) finish and matte finish are available on most materials at an additional cost. Please call for details.
Sheet Rubber Color
The standard color of our sheet rubber is black, unless noted otherwise. Custom colors and color matching is available.
Test Reports
Short form test results, basic physicals, are available upon request at the time of the order. Full test reports for particular specifications will be also quoted on request. This may include certifying the ozone resistance, heat ageing, compliances, and many more aspects of our product. Certifications are sent with your order upon request at no charge.
More information about the WARCO products is available at General Product Information.
In addition to the previously mentioned specification, we also offer a comprehensive list of tables and explanations relating to the MIL-PRF-6855 specifications for rubber sheet, rubber strips, rubber extruded tubing, and rubber extruded u channels. Learn more at this link.
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: https://www.dsp.dla.mil/Specs-Standards/.
View complete Terms & Conditions of Sale for suitability of use and formulations
