shelf life expiration time does not begin until after the first fully complete quarter. An elastomer cured on November 15 th 2020 would have a cure date presented as 4Q20 but would not begin aging for expiration date purposes until January 1 st (1Q21). Meaning with a 3 year shelf life ...
ESP Shelf Life Chart Based On AS 5316 Elastomer Shelf Life Recommendations:Elastomer FamilyASTM D1418 AbbreviationESP Recommended Life (years) Butyl Rubber, Isobutylene Isoprene IIR 25 Ethylene Propylene EPM, EPDM 25 Fluorocarbon (Viton®) FKM 25 Fluorosilicone FMQ, FVMQ 25 Perfluorocarbon (Kalrez...
Shelf Life Shelf life for o-rings can vary anywhere from three years to unlimited, depending on elastomer type. More information on o-ring shelf life recommendations can be found here. O-Ring Groove Design Numerous factors go into the appropriate design of an o-ring gland. View our o-ring...
Long Shelf Life Resistance to corrosive environments makes PTFE a preferred selection when the O-ring may not be in continual use. PTFE O-rings do not degrade over time in the same way that some elastomers might. Ultraviolet rays also do not degrade PTFE O-rings as they might O-rings m...
This chart provides the recommended shelf life for various materials of elastomer (rubber) seals, per SAE’s Aerospace Recommended Practice ARP 5316.