HR Polyfoam Rolls (HR 32)

High-resilience (HR) Polyfoam is an open-cell polyurethane foam with fire-retardant properties used primarily for seat cushioning in transportation applications. Its low density, low thermal conductivity, and strong mechanical properties also contribute to its excellence as a thermal and sound insulator. Long-lasting, versatile, and comfortable. HR 32 is sold in 36" x 55' rolls with and without Reemay scrim. Also sold in sheets in this firmness level and for HR 55 and HR 70. Please note, the Reemay scrim option does not come with a 25.853(a) 12-second vertical burn certificate.  Specifications Grade Density (pcf) Firmness (ILD) (4" thick, 25%) Firmness (ILD) (4" thick, 65%) HR 32 2.6 32-38 65-86 Flammability Standards HR Polyfoam has been tested to meet the following flammability standards: California Technical Bulletin 117 FMVSS-302 (Automotive Flammability) 14 CFR (FAR) 25.853(a), Vertical Burn Compatibility   This product meets and exceeds automotive flammability standards. • The plain option of this product is acceptable for use in all types aircraft and rotorcraft. • The Reemay scrim option does not pass the 25.853(a) vertical burn test on its own and may only be acceptable for certain types of aircraft. • Will pass the 14 CFR 25.853(c) Oil Burn for Seat Cushion when paired with a suitable fire blocking fabric, such as the Bramport ProTM Fireblock Fabric. This product is acceptable for use in marine interiors, but is not water resistant or repellent. It is highly buoyant with the use of a water-blocking layer. Unknown at this time whether this material is acceptable for use in Railway applications.