upholstery foam fmvss 302
Rebuilding a car seat, truck bench or RV dinette starts with the right cushion, and upholstery foam FMVSS 302 is the benchmark to look for whenever foam is headed into a vehicle interior. Choosing foam that meets this flammability standard helps your project match the materials used in factory automotive interiors.
What FMVSS 302 Means for Foam
Federal Motor Vehicle Safety Standard 302 covers the flammability of materials used inside passenger vehicles. Samples are tested in a horizontal burn test, and a material passes when its flame spreads no faster than 4 inches per minute. Flame retardant upholstery foam made for auto use is designed with this test in mind.
What to Look For
Density and Firmness
Automotive seat foam takes daily compression, so higher-density foam generally holds its shape longer. Match firmness to the job: firmer for seat bottoms, softer for backrests and armrests.
Thickness and Documentation
- Measure the original cushion before ordering
- Confirm the product listing states FMVSS 302 compliance
- Plan for trimming and shaping around frames
Shop Foam for Your Vehicle Project
Ready to get started? Browse the auto upholstery foam options below and pick the thickness and firmness that fit your seats.