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blkrndsqu_w.gif (7051 bytes)  Everlastic® 2nd Seal  new4.gif (6624 bytes)


Extruded Neoprene

EPDM 60 Durometer Profile



Williams Everlastic 2nd Seal is placed prior to the primary seal assuring a watertight seal should the primary seal fail.

The 2nd Seal can be used in verticle and horizontal applications or as a primary seal when appearance is not an issue.


Excellent movement capability in extension 250% and compression 50%.

No stress on bond line unless exceeding 250% in extension.

Excellent adhesion when butting together using 2nd Seal adhesive.

Easy to install.

A must to assure leak free performance for the long run.



Available sizes:

For joints 1" to 4"

Tech Data? Click Here

  Typical Physical Properties:

Property Test Method Typical Values
Durometer Hardness ASTM D-2240 60+/- 5, Shore A 1000 psi min.
Ultimate Tensile ASTM D-412 1000 psi min.
Ultimate Elongation ASTM D-412 300% min.
Ozone Resistance

(20% Strain 100 hours A 104°F)

ASTM D-1149 No Cracks
Low Temperature Flexibility

(5 hours @ - 20°F)

ASTM D-2137 Pass
Aged in Air (70 hrs @ 158°F)

Change in Hardness

Change in  Tensile

Change in Elongation

ASTM D-573  

+/- 15 pts. max.

+/- 30% max.

- 50% max. change

(not less than 300%)

Compression Set

(22 hrs. @ 158°F)

ASTM D-395

Method B

20% max
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Phone:  Toll Free 800-521-9594    or      248-643-6400
Fax: 248-643-7117
Email: Wilpro@williamsproducts.net
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: Wilpro@williamsproducts.net  Contact Information