Ensolite Foam (IV1, IV2, IV3, MLC)
SKU# IV1-012-25
Armacell's Ensolite IV1, IV2, IV3, and MLC elastomeric closed cell foams are designed for use in Aerospace, Automotive, and Marine applications. These foams have excellent resistance to oil, fuel, and water, and can be used in both indoor and outdoor applications. This foam is notable for its use as carpet padding, cushioning for seat components, or in headliners and sidewalls. It can also be used for gasketing or sealing applications.
Sold in 25-ft rolls. Thicknesses include 1/8" (0.125"), 1/4" (0.25"), 1/2" (0.5"), and 1". ±1/16" tolerance on all thicknesses. If any thicknesses below are unavailable, please contact us—they may be available with a short lead time.
Note: Includes FAA burn certificate for 25.853(a), except for 1/8" IV1, 1/8" MLC, and 1/4" MLC foam. 1/8" IV1 and 1/4" MLC foam do not pass FAR 25.853(a) vertical burn test when tested alone, but do pass when sandwiched between acceptable materials, such as in armrests, carpet padding, wall padding, etc. 1/8" MLC is not expected to pass even when sandwiched between acceptable materials.
IV1 Specifications
| Width | 54 inch |
| Color |
Black |
| Density (ASTM D 1056) |
3.0 - 5.0 lb/ft3 |
| Compression Deflection 25% (ASTM D 1056) |
2.0 - 5.0 psi |
| Compression Deflection 50% (60 second hold; ISO 3386-1) |
6.96 - 14.06 psi |
| Compression Set (ASTM D 1056) | 40% max |
| Elongation (ASTM D 412 Die A) |
100% min |
| Tear Strength (ASTM D 624 Die C) | 9 lb/in min |
| Tensile Strength (ASTM D 412 Die A) | 50 psi min |
| Water Absorption (ASTM D 1056) | 5% max |
| Temperature Range | -40°F to 200°F (intermittent) |
Flammability Standards
Armacell Ensolite IV1 foam passes the following flammability standards. Other standards not listed below may also be applicable. Contact us for details.
- California Technical Bulletin 117
- 14 CFR (FAR) 25.853(a), Vertical Burn (at 1/4" thickness and up)
- FMVSS-302, Automotive Flammability
- UL94 HF-1
- UL94 V-0 (at 1/2" thickness and up)
IV3 Specifications
| Width | 54 inch |
| Color |
Black |
| Density (ASTM D 1056) |
7.0 - 9.5 lb/ft3 |
| Compression Deflection 25% (ASTM D 1056) |
9.0 - 13.0 psi |
| Compression Deflection 50% (60 second hold; ISO 3386-1) |
14.07 - 24.9 psi |
| Compression Set (ASTM D 1056) | 35% max |
| Elongation (ASTM D 412 Die A) |
100% min |
| Tear Strength (ASTM D 624 Die C) | 20 lb/in min |
| Tensile Strength (ASTM D 412 Die A) | 100 psi min |
| Water Absorption (ASTM D 1056) | 5% max |
| Temperature Range | -40°F to 200°F (intermittent) |
Flammability Standards
Armacell Ensolite IV3 foam passes the following flammability standards. Other standards not listed below may also be applicable. Contact us for details.
- California Technical Bulletin 117
- 14 CFR (FAR) 25.853(a), Vertical Burn
- FMVSS-302, Automotive Flammability
- UL94 HF-1, HBF, 5VB
- UL94 V-0/5VA (at 1/4" thickness and up)
IV2 Specifications
| Width | 54 inch |
| Color |
Black |
| Density (ASTM D 1056) |
5.5 - 7.5 lb/ft3 |
| Compression Deflection 25% (ASTM D 1056) |
5.0 - 9.0 psi |
| Compression Deflection 50% (60 second hold; ISO 3386-1) |
6.96 - 14.07 psi |
| Compression Set (ASTM D 1056) | 35% max |
| Elongation (ASTM D 412 Die A) |
100% min |
| Tear Strength (ASTM D 624 Die C) | 12 lb/in min |
| Tensile Strength (ASTM D 412 Die A) | 75 psi min |
| Water Absorption (ASTM D 1056) | 5% max |
| Temperature Range | -40°F to 200°F (intermittent) |
Flammability Standards
Armacell Ensolite IV2 foam passes the following flammability standards in 1/4" or higher. Other standards not listed below may also be applicable. Contact us for details.
- California Technical Bulletin 117
- 14 CFR (FAR) 25.853(a), Vertical Burn
- FMVSS-302, Automotive Flammability
- UL94 HF-1, HBF, 5VB
- UL94 V-0/5VA (at 1/4" thickness and up)
MLC Specifications
| Width | 56 inch |
| Color |
Black |
| Polymer | PVC/NBR |
| Density (ASTM D 1056) |
3.5 - 5.5 lb/ft3 |
| Compression Deflection 25% (ASTM D 1056) |
2.0 - 3.5 psi |
| Compression Deflection 25% (after Heat Aging) |
+/- 30% |
| Compression Set (ASTM D 1056) | 40% max |
| Elongation (ASTM D 412 Die A) |
150% min |
| Tear Strength (ASTM D 624 Die C) | 8 lb/in min |
| Tensile Strength (ASTM D 412 Die A) | 40 psi min |
| Water Absorption (ASTM D 1056) | 5% max |
| Temperature Range | -40°F to 200°F (intermittent) |
Flammability Standards
Armacell Ensolite MLC foam passes the following flammability standards at 1/4" and higher. Other standards not listed below may also be applicable. Contact us for details.
- California Technical Bulletin 117
- 14 CFR (FAR) 25.853(a), Vertical Burn
- FMVSS 302, Automotive Flammability
- UL94 HBF
- UL94 HF-1
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This product meets all automotive flammability requirements and is recommended for use in automotive interiors. |
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• IV1 is acceptable for use in all types aircraft and rotorcraft (at 1/4" and higher only). • IV3 is acceptable for use in all types aircraft and rotorcraft. • MLC Foam in 1/4" (and thinner) does not pass 25.853(a) on its own, but does pass when sandwiched between two acceptable materials, such as in armrests, carpet pads, and wall padding. • This product is not acceptable for applications requiring the 25.853(c) Oil Burn for Seat Cushion test unless a suitable fire blocking layer is used. |
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This product is recommended for use in marine applications. It has excellent characteristics to resist water absorption and floats. |
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Unknown at this time whether this material is acceptable for use in Railway applications. |
Precision, safety, and compliance are non-negotiable in the aerospace, automotive, and marine industries, which makes material selection crucial. Bramport Supply Co. brings you Armacell Ensolite foam, a trusted line of elastomeric Ensolite closed-cell foam engineered for the most demanding transportation interiors on the market.
Why Ensolite Foam?
- Superior resistance to oil, fuel, water, and moisture ingress
- Versatile applications: carpet underlayment, seat cushioning, headliners, sidewalls, gaskets, and seals
- Indoor and outdoor suitability across a wide temperature range
- FAA burn certification for FAR 25.853(a) compliance on qualifying thicknesses
Ensolite Grade Options
- IV1: Lightweight, flexible cushioning ideal for aircraft padding and carpet underlayment
- IV2: Enhanced firmness for structural padding and gasketing
- IV3: Higher density for heavy-duty seating and wall applications
- MLC: Formulated for specialized interior and sealing needs
Is Ensolite foam FAA-compliant?
Most IV grades 1/4" and thicker include FAA burn certificates for FAR 25.853(a). Thinner cuts may require sandwiching with compliant materials. Contact us for guidance.
What industries use Aerospace Ensolite foam?
Aerospace, automotive, and marine; anywhere regulation-compliant, fire-resistant cushioning is required.
Does Bramport offer technical support for material selection?
Absolutely. Bramport is built on ten years of technical aerospace experience and counting. We are here to help you choose the right grade and thickness for your specific application.