Description: W-1644 is visco-elastic, or slow recovery open cell polyurethane foam. This open cell sponge is often referred to as memory foam. W-1644 and its family have been specially developed for cushioning and even pressure distribution. This foam has a very low compression set, excellent shock absorption, slow compression recovery and uniform cell structure. W-1644 meets the FMVSS-302 Flammability rating, and has a temperature range of -67° F to 250° F, allowing it to be used in automotive applications.
W-1644’s excellent compression set characteristics and slow recovery allow it to be used in many applications such as automotive, orthopedic goods, occupational seating, medical and safety equipment.
W-1644 has an indentation force deflection @ 25% of 33 psi according to ASTM D3574. Other grades can be softer or firmer, depending on application. All slow recovery cellular urethane products can be supplied with or without adhesive backing in full rolls up to 60" wide, or slit rolls as narrow as ¼". We can also die cut or waterjet cut parts to your exact specifications.
|FMVSS-302||PASS (.063" OR THICKER)|
|Physical Property||Test Method||Unit of Measure||Result|
|INDENTATION FORCE DEFLECTION @ 25%||ASTM D3574||lbs
|TENSILE STRENGTH (AVERAGE)||ASTM D3574||psi
|ELONGATION (AVERAGE)||ASTM D3574||psi
|ELONGATION (AVERAGE)||ASTM D3574||%||270|
|TEAR RESISTANCE (AVERAGE)||ASTM D624||lb/in
|COMPRESSION SET (MAXIMUM)||ASTM D1056||%||3|
|COMPRESSION SET (MAXIMUM)||ASTM D3574||%||10|
This information is for reference only. Atlantic Gasket shall not be held responsible for its content or use. It is the customer’s responsibility to obtain and test samples to determine the suitability of a material for a specific application.
Click here to download a specification Word document.