Polytek® Development Corp refers to shelf life as how long material can remain on a shelf unopened in original packaging before it begins to lose its ability to cure or function properly.
With the exception of latex-based products, the shelf life for Polytek products is six months from the date of shipment for all unopened containers. Unopened latex-based products are three months from the date of shipment.
To avoid material becoming unusable:
- Purchase only what you need to avoid shelfing materials for extended periods of time.
- Close original containers tightly after use.
- Keep material in original packaging in a cool and dry environment.
- Purchase sizes that are in line with project size to avoid opened material curing due to moisture contamination.
Always perform a small test cure if you are unsure if product is functional.
Additional information on shelf life: https://www.polytek.com/tutorial/tek-tip-shelf-life-storage-polytek-polyurethane-products