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Everlastic® Vinyl SR

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Williams Everlastic Vinyl SR is a uni-cellular (Closed Cell) foam, as distinguished from Open Cell and or/ Syntactic Foam.  Contains air or gas bubbles which are completely separated or unconnected, it is structurally strong, and transmits little heat or moisture through sealed pockets.

For new or existing joints.
Excellent for isolation and thermal conductivity

Typical Physical Properties


Property Test Method Typical Values
Density ASTM D - 3575-91 4.5 lbs. per ft.3
Compression Deflection

PSI Required to compress 50%

PSI Required to compress 25%


ASTM D - 1056-91

ASTM D - 1056-91


45 +/- 3 psi.

15 +/- 3 psi.

Tensile Strength ASTM D - 412 20 min. psi.
Elongation at break ASTM D - 412 50% min.
Water Absorption ASTM - 1056 0.1% max.
Toxicity   Non Toxic
Resistance to Chemicals   Excellent to most oils & chemicals
Ozone Resistance & Weathering   Excellent
Fire Resistance   Self-Extinguishing
Recovery after 3 compressions to 50%;  load released after each application; and tested one hour after 3rd application.   98%
Please contact us by;  
Phone:  Toll Free 800-521-9594    or      248-643-6400
Fax: 248-643-7117
Rubber, Neoprene, Foam, Gasket, Seal, Construction. To the best of our knowledge this published information is accurate, however, to determine suitability of material/product for a specific application is the user's responsibility.  Williams Products, Inc. shall not be liable for any loss or damage resulting from inappropriate usage.
Everlastic® is a registered trademark of Williams Products. All other products mentioned are registered trademarks or trademarks of their respective companies.
Contact Williams Products: Phone: 800-521-9594 or 248-643-6400 or Email:  Contact Information