AMS 3215 Fuel Resistant Nitrile 70 Durometer
AMS 3215 is a 70 durometer Shore A nitrile (NBR/Buna-N) sheet rubber formulated for excellent resistance to continuous exposure to aromatic and aliphatic fuels. The compound delivers 1700 psi typical tensile strength and 350% typical ultimate elongation across a service range of -30°F to +220°F. Manufactured in the USA in compliance with the Buy American Act and meeting SAE AMS 3215 specification requirements.
Key Properties
- Durometer Hardness: 70 Shore A (± 5)
- Tensile Strength: 1700 psi (typical)
- Ultimate Elongation: 350% (typical)
- Temperature Range: -30°F to +220°F
- Available Thickness: 1/64″ to 1/2″
- Estimated Weight (1/8″ × 36″): 2.45 lb per linear foot
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Durometer Hardness | 70 Shore A (± 5) | — |
| Available Thickness | 1/64″ – 1/4″ (standard); up to 1/2″ available | — |
| Standard Roll Widths | 36″, 48″ (custom up to 55″) | — |
| Estimated Weight (1/8″ × 36″) | 2.45 lb per linear foot | — |
| Standard Color | Black | — |
| Standard Finish | Smooth | — |
Mechanical Properties
| Property | Value | Test Method |
| Tensile Strength (typical) | 1700 psi | — |
| Ultimate Elongation (typical) | 350% | — |
Thermal Properties
| Property | Value | Test Method |
| Temperature Range | -30°F to +220°F | — |
Chemical Resistance
| Property | Value | Test Method |
| Aromatic Fuel Resistance | Excellent (continuous exposure) | — |
| Aliphatic Fuel Resistance | Excellent (continuous exposure) | — |
| Petroleum / Oil Resistance | Suitable for fuel and oil resistant gasketing | — |
Dimensional Tolerances — Standard RMA
| Property | Value | Test Method |
| Thickness Tolerance, 0.031″ & thinner | ± 0.010″ | RMA |
| Thickness Tolerance, 0.032″ to 0.061″ | ± 0.012″ | RMA |
| Thickness Tolerance, 0.062″ to 0.124″ | ± 0.016″ | RMA |
| Thickness Tolerance, 0.125″ to 0.186″ | ± 0.020″ | RMA |
| Thickness Tolerance, 0.187″ to 0.374″ | ± 0.031″ | RMA |
| Thickness Tolerance, 0.375″ to 0.500″ | ± 0.047″ | RMA |
| Thickness Tolerance, 0.501″ to 0.750″ | ± 0.094″ | RMA |
| Thickness Tolerance, 0.751″ & thicker | ± 10% | RMA |
| Standard Roll Length Tolerance | ± 10% (approximate) | — |
Standard Roll Lengths (Approximate ± 10%)
| Property | Value | Test Method |
| 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 | — |
Compliance
- SAE AMS 3215 — Compliant
- Buy American Act — Compliant
- Made in the USA
- Aerospace and automotive fuel system sealing
- Fuel and oil resistant gasketing
- Sheet rubber fabrication for fuel-exposed environments
- Industrial sealing in petroleum service
- Aviation ground equipment components
Common industries: aerospace, automotive, aviation ground support, industrial petroleum, and fuel handling.
AMS 3215 is a fuel resistant nitrile (NBR/Buna-N) sheet rubber engineered for sealing and gasketing applications involving continuous exposure to aromatic and aliphatic fuels. Formulated to meet the SAE AMS 3215 specification, the 70 Shore A compound is positioned for aerospace and automotive fuel system service where reliable elastomer performance against petroleum-based media is required.
Mechanical performance is characterized by 1700 psi typical tensile strength and 350% typical ultimate elongation, with a recommended service temperature range of -30°F to +220°F. The material is supplied with a standard smooth finish and contains talc as a processing aid; textured (fabric) and matte finishes are available on request.
Roll widths are offered at 36″ or 48″ untrimmed (with up to approximately 3″ of additional width), with custom widths available up to 55″ and trimmed rolls available on request. Thickness tolerances follow standard RMA classifications, and closer tolerances or custom thicknesses can be quoted on request.
Compliant with SAE AMS 3215 and the Buy American Act.
What differentiates AMS 3215 from general-purpose nitrile sheet rubber?
AMS 3215 is a fuel resistant nitrile compound formulated and qualified to the SAE AMS 3215 specification, making it specifically suited to continuous contact with aromatic and aliphatic fuels. Compared with general-purpose NBR sheet, it is selected when the application demands documented compliance to an aerospace specification and reliable performance in fuel-exposed sealing.
Why is fuel resistance critical for this material?
The defining function of AMS 3215 is sustained service in contact with aromatic and aliphatic fuels. Elastomers that are not formulated for these fluids can swell, soften, or degrade, leading to seal failure, leakage, and contamination. AMS 3215 is compounded to maintain its 70 Shore A hardness, 1700 psi tensile strength, and 350% elongation in fuel-exposed gasketing and sealing service.
What is the temperature range for AMS 3215?
The recommended service temperature range is -30°F to +220°F.
Is AMS 3215 suitable for aerospace and Buy American Act–regulated environments?
Yes. The material is manufactured in the USA, complies with the Buy American Act, and meets SAE AMS 3215 specification requirements, making it suitable for aerospace and federal procurement applications calling out those standards.
How should AMS 3215 be specified?
Specify grade (AMS 3215), thickness, roll width, finish (smooth, textured/fabric, or matte), trimmed or untrimmed rolls, dimensional tolerances, compliance requirements, and finished format.
