Low Smoke, Low Flame, Low Toxicity Neoprene
065E1344 is a polychloroprene (CR) compound formulated specifically for applications requiring stringent fire, smoke, and toxicity performance. With a 65 Shore A durometer, the compound delivers reliable mechanical performance (1,200 psi minimum tensile, 300% minimum elongation per ASTM D412) while meeting demanding rail, mass transit, aerospace, and building/construction smoke and flame specifications including ASTM E662, ASTM C542 (ASTM C1166 procedure), Bombardier SMP 800-C, Boeing BSS 7239, and UL 94V-0. Continuous service from −30°F to +220°F. RoHS, REACH, and California Prop 65 compliant. Made in the USA.
Key Properties
- Durometer Hardness: 65 Shore A (±5) (ASTM D2240)
- Tensile Strength (Minimum): 1,200 psi (ASTM D412)
- Elongation (Minimum): 300% (ASTM D412)
- Operating Temperature: −30°F to +220°F
- Smoke & Flame Compliance: ASTM E662, ASTM C542 (C1166), Bombardier SMP 800-C, Boeing BSS 7239, UL 94V-0
- Regulatory Compliance: RoHS, REACH, California Prop 65
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- Specifications
- Applications
- General Info
- FAQs
General Information
| Property | Value | Test Method |
| Compound Number | 065E1344 | — |
| TDS Date | December 09, 2022 | — |
| Origin | Made in the USA | — |
| Polymer | Polychloroprene (Neoprene) | — |
| Operating Temperature Range | −30°F to +220°F | — |
Physical Properties (Required Minimums)
| Property | Value | Test Method |
| Hardness, Shore A | 65 ±5 | ASTM D2240 |
| Tensile | 1,200 psi | ASTM D412 |
| Elongation | 300% | ASTM D412 |
Smoke & Flame Specifications
| Property | Value | Test Method |
| Smoke Density | Compliant | ASTM E662 |
| Smoke & Flame (Elastomeric Joint Sealant Procedure) | Compliant | ASTM C542 (ASTM C1166 Procedure) |
| Rail Vehicle Smoke and Toxicity | Compliant | Bombardier SMP 800-C |
| Aerospace Toxic Gas Generation | Compliant | Boeing BSS 7239 |
| Plastic Materials Flammability | Compliant (V-0) | UL 94V-0 |
Regulatory / Environmental Compliance
| Property | Value | Test Method |
| RoHS | Compliant | — |
| REACH | Compliant | — |
| California Prop 65 | Compliant | — |
Compliance
- ASTM E662 (Smoke Density) — Compliant
- ASTM C542 (ASTM C1166 Procedure — Elastomeric Joint Sealant Smoke and Flame) — Compliant
- Bombardier SMP 800-C (Rail Vehicle Smoke and Toxicity) — Compliant
- Boeing BSS 7239 (Aerospace Toxic Gas Generation) — Compliant
- UL 94V-0 (Plastic Materials Flammability — Self-Extinguishing) — Compliant
- RoHS — Compliant
- REACH — Compliant
- California Prop 65 — Compliant
- Rail and mass transit passenger compartment seals where Bombardier SMP 800-C smoke and toxicity compliance is required
- Aerospace interior components subject to Boeing BSS 7239 toxic gas generation requirements
- Building and construction fire barriers where UL 94V-0 flammability rating is required
- Low-toxicity gasketing and sealing applications in regulated environments (rail, transit, aerospace, healthcare)
- Cable and harness wraps in fire-rated electrical and electronic assemblies
Common industries: Rail and mass transit, aerospace, fire-rated building construction, electrical and electronics, fire-safety regulated industrial sealing.
065E1344 is a polychloroprene (CR) elastomer compound formulated specifically for applications where stringent fire safety, smoke generation, and toxic gas evolution requirements drive material selection.
Manufactured in the USA, the compound carries the most comprehensive smoke-and-flame credential set in the H-O Products neoprene catalog: ASTM E662 (smoke density), ASTM C542 / ASTM C1166 procedure (the elastomeric joint sealant smoke and flame protocol), Bombardier SMP 800-C (Bombardier Transportation’s smoke and toxicity standard for rail vehicle materials), Boeing BSS 7239 (Boeing’s toxic gas generation standard for aerospace cabin materials), and UL 94V-0 (the most stringent UL flammability classification, indicating self-extinguishing burning behavior with no flaming drips).
Few elastomer compounds carry this combination of rail, aerospace, and electrical/building flame credentials in a single formulation.
The 65 Shore A durometer (±5 tolerance per ASTM D2240) is firmer than the 50 Shore A AMS 3205 and AMS 3208 sheet rubber grades, supporting structural sealing and gasket applications where dimensional stability and sealing pressure capacity are required alongside fire-safety compliance. Mechanical properties are specified as required minimums (not typical values): 1,200 psi tensile strength minimum and 300% elongation minimum per ASTM D412.
The compound is also compliant with three baseline regulatory standards: RoHS (Restriction of Hazardous Substances — EU directive on lead, mercury, and other restricted materials), REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals — EU chemical safety regulation), and California Prop 65 (Safe Drinking Water and Toxic Enforcement Act listing). Operating temperature spans −30°F to +220°F.
The TDS does not publish thickness, width, or supply format details — these are typically defined per converting application.
Compliant with ASTM E662, ASTM C542 (ASTM C1166 procedure), Bombardier SMP 800-C, Boeing BSS 7239, UL 94V-0, RoHS, REACH, and California Prop 65.
What differentiates 065E1344 from the AMS 3205 and AMS 3208 neoprenes?
065E1344 is positioned for fire-safety regulated applications across rail, mass transit, aerospace, and building construction — carrying ASTM E662, ASTM C542, Bombardier SMP 800-C, Boeing BSS 7239, and UL 94V-0 credentials simultaneously. The AMS 3205 and AMS 3208 neoprenes are aerospace-spec compliant chloroprene sheet rubbers but do not carry the smoke and flame credential set. 065E1344 also runs at a firmer 65 Shore A durometer (vs 50 Shore A on the AMS grades), trading off some conformability for structural performance suited to its target applications.
Why is durometer selection important when specifying 065E1344?
The 65 Shore A durometer is firmer than typical sheet rubber grades, supporting structural sealing and gasketing applications where dimensional stability and sealing pressure capacity matter. Specifiers requiring softer service should consider the 50 Shore A neoprenes (AMS 3205 / AMS 3208) — though those grades do not carry the smoke and flame credentials of 065E1344.
What is the operating temperature range for 065E1344?
065E1344 has an operating temperature range of −30°F to +220°F.
Is 065E1344 suitable for rail, transit, aerospace, or fire-rated building applications?
Yes. The compound carries the most comprehensive fire-safety credential set in the H-O neoprene catalog: ASTM E662 (smoke density), ASTM C542 / C1166 (elastomeric joint sealant), Bombardier SMP 800-C (rail vehicle smoke and toxicity), Boeing BSS 7239 (aerospace toxic gas generation), and UL 94V-0 (plastic flammability — self-extinguishing). It is also RoHS, REACH, and California Prop 65 compliant for general regulatory environments.
How should 065E1344 be specified?
Specify compound number (065E1344), polymer (polychloroprene / CR), durometer (65 Shore A ±5), required compliance set (any combination of ASTM E662 / ASTM C542 / Bombardier SMP 800-C / Boeing BSS 7239 / UL 94V-0 / RoHS / REACH / California Prop 65), thickness and supply format per application, dimensional tolerances, and finished format.
