Neoprene AMS 3205
Neoprene AMS 3205 Low Temperature is a 50 Shore A durometer chloroprene (CR) sheet rubber engineered specifically to meet the SAE AMS 3205 aerospace material specification. The defining performance characteristic is low-temperature resilience to −40°F, with continuous service from −40°F to +220°F. Tensile strength is 1,600 psi typical with 400% ultimate elongation typical. Available in thicknesses from 1/64″ to 1/2″, with 36″ or 48″ standard widths (custom widths up to 55″). Standard color is black; smooth finish is standard with textured (fabric) and matte finishes available. Made in the USA. Talc present.
Key Properties
- Durometer Hardness: 50 Shore A (±5)
- Tensile Strength (Typical): 1,600 psi
- Ultimate Elongation (Typical): 400%
- Temperature Range: −40°F to +220°F
- Compliance: SAE AMS 3205
- Thickness Range: 1/64″ to 1/2″
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Mechanical Properties
| Property | Value | Test Method |
| Durometer Hardness (Shore A ±5) | 50 | — |
| Tensile Strength (Typical) | 1,600 psi | — |
| Ultimate Elongation (Typical) | 400% | — |
Thermal Properties
| Property | Value | Test Method |
| Temperature Range | −40°F to +220°F | — |
Physical Properties
| Property | Value | Test Method |
| Material / Substrate | Chloroprene (CR) — Neoprene | — |
| Thickness Range | 1/64″ – 1/4″ (extended thicknesses to 1/2″ available) | — |
| Width | 36″ or 48″ standard (custom widths up to 55″; untrimmed rolls measure approximately 3″ wider) | — |
| Standard Color | Black (custom colors and color matching available) | — |
| Standard Finish | Smooth (textured / fabric and matte finishes available on most materials) | — |
| Surface Treatment | Talc present | — |
| Country of Origin | Made in the USA | — |
| Estimated Weight (1/8″ × 36″ per linear foot) | 2.53 lb | — |
Standard Roll Lengths (Approximate ±10%)
| Thickness | Standard Roll Length |
| 1/64″ | 180 feet |
| 1/32″ | 150 feet |
| 1/16″ | 100 feet |
| 3/32″ | 65 feet |
| 1/8″ | 50 feet |
| 3/16″ | 30 feet |
| 1/4″ | 25 feet |
| 5/16″ | 20 feet |
| 3/8″ | 16.5 feet |
| 1/2″ | 12.5 feet |
Sheet Rubber Thickness Tolerances — Standard RMA
| Thickness Range | Tolerance |
| 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% |
Closer tolerances and custom thicknesses are available and can be priced on request. Test reports including short-form test results and basic physicals are available upon request at the time of order. Certifications are sent with your order upon request at no charge.
Compliance
- SAE AMS 3205 (Aerospace Material Specification — Chloroprene Sheet Rubber, Low Temperature) — Compliant
- Aerospace sealing applications requiring SAE AMS 3205 compliance and low-temperature service to −40°F
- Automotive sealing in cold-climate or low-temperature service environments
- Low-temperature gasketing for HVAC, refrigeration, and environmental-control systems
- Sheet rubber fabrication into custom gaskets, seals, and converted parts
- Industrial sealing applications requiring chloroprene chemistry with cold-temperature flexibility
Common industries: Aerospace, automotive, refrigeration and HVAC, industrial sealing, gasket fabrication.
Neoprene AMS 3205 Low Temperature is a chloroprene (CR) elastomer sheet rubber product engineered specifically to meet the SAE AMS 3205 aerospace material specification — a published industry standard for chloroprene sheet rubber suitable for aerospace and automotive sealing applications.
The defining performance characteristic that distinguishes this grade from general-purpose neoprene is the low-temperature resilience to −40°F, supporting service in cold-environment sealing and gasketing applications where standard neoprene formulations would lose flexibility and sealing function.
Mechanical properties at the 50 Shore A durometer (±5 tolerance) include 1,600 psi tensile strength typical and 400% ultimate elongation typical — a balanced mid-durometer profile suitable for sheet rubber fabrication into gaskets, seals, and converted parts. Continuous service temperature spans −40°F to +220°F, providing both cold-weather flexibility and moderate heat resistance.
The product is supplied as standard sheet rubber roll stock in thicknesses from 1/64″ to 1/2″, with standard roll widths of 36″ or 48″ (untrimmed rolls measure approximately 3″ wider; trimmed roll rubber available on request; custom widths to 55″ available). Standard color is black; custom colors and color matching are available. Standard finish is smooth, with textured (fabric) and matte finishes available at additional cost on most materials.
Talc is present on the rubber surface as a typical anti-block treatment.
The TDS publishes detailed standard roll lengths by thickness (180 ft for 1/64″ down to 12.5 ft for 1/2″, approximate ±10%) and Standard RMA thickness tolerances scaled to nominal thickness. Closer tolerances and custom thicknesses available on request. Test reports including short-form test results and basic physicals are available upon request at the time of order; certifications sent with order upon request at no charge. Made in the USA. Samples available upon request.
Compliant with SAE AMS 3205 (Aerospace Material Specification — Chloroprene Sheet Rubber).
What differentiates Neoprene AMS 3205 from general-purpose neoprene?
The defining differentiator is low-temperature performance to −40°F combined with formal compliance to the SAE AMS 3205 aerospace material specification. Standard neoprene formulations typically retain useful flexibility only down to roughly 0°F before stiffening; AMS 3205 is engineered for service at −40°F, supporting aerospace and cold-climate automotive applications where flexibility and sealing function must be maintained at low temperatures.
Why is durometer selection important when specifying AMS 3205?
The 50 Shore A durometer is a balanced mid-range hardness suitable for general sheet rubber applications — soft enough for conformable sealing, firm enough for dimensional stability in gaskets and converted parts. The ±5 Shore A tolerance is consistent with industry practice for sheet rubber and supports predictable sealing-pressure performance across production lots.
What is the operating temperature range for AMS 3205?
Neoprene AMS 3205 has a temperature range of −40°F to +220°F.
Is AMS 3205 suitable for aerospace or regulated industrial applications?
Yes. The product is engineered specifically to meet the SAE AMS 3205 aerospace material specification — a formal industry standard for chloroprene sheet rubber. Test reports and certifications are available with order at no charge upon request, supporting documentation requirements for aerospace and regulated industrial supply.
How should AMS 3205 be specified?
Specify product (Neoprene AMS 3205 Low Temperature), thickness (1/64" through 1/2", or custom), width (36" / 48" / custom up to 55"), trimmed or untrimmed roll, finish (smooth / textured / matte), color (black or custom), tolerance class (standard RMA or closer custom tolerance), compliance requirement (SAE AMS 3205), and certification request if needed.
