The following materials have a five-year shelf-life: natural latex, nitrile latex, Hycar®, neoprene, PVC, urethane, PVA, EVOH, polyethylene and other synthetic coatings.
These guidelines are void if products have broken packaging seals, are removed from original packaging, exposed to moisture, exposed to ultraviolet light for an extended time, exposed to temperatures over 90 degrees Fahrenheit, or have ozone exposure.