Tag Archives: shelf life

Shelf Life in Real Life

While WEST SYSTEM® epoxy has a long shelf life, age will eventually affect its handling characteristics and cured strength. When stored for very long periods, hardeners may turn darker (reddish to purple), become thicker and give off more odor. 105 Resin may lose some clarity and also become slightly thicker. Use extra care when mixing age-thickened products (stir extra thoroughly), and don’t use old epoxy if color or clarity is crucial to your project. Continue reading

Epoxy Shelf Life

by Captain James R. Watson

If you’ve had quantities of left over WEST SYSTEM® Epoxy after completing a project, you may have wondered how long the material would remain usable. Epoxy users have asked us these kinds of question regarding older epoxy:

“I bought some of your epoxy at a rummage sale, it’s old, is it still okay to use?” Continue reading