The society of aerospace engineers sae issued aerospace recommended practice arp 5316.
Nitrile o ring shelf life.
Hydrogenated nitrile hnbr or hsn hnbr 15 years hypalon 5 years nitrile buna n or nbr nbr 20 years nylon 5 years polyacrylate acm 15 years.
Global o ring and seal adheres to the sae international aerospace standard as5316 for all elastomer product shelf life and storage conditions.
O ring shelf life compliance standard.
Experience demonstrates that storage conditions impact the useful life of o rings than generalized shelf life time.
Sae arp5316 is the most widely referenced guide for data recording procedures packaging and storing of aerospace elastomeric seals.
The shelf life of each polymer family as practiced by parker o ring and engineered seals division is listed below.
Hydrogenated nitrile hnbr and polyacrylate rubbers acm aem.
It was issued in 1998 to supersede mil hdbk 695 as the aerospace industry standard in governing o rings and molded seals shelf life.
Shelf life as well as issuing shelf life statements for two polymer families not covered by as5316.
Elastomer and o ring shelf life recommendation summary with proper storage.
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Previously known as arp5316 recommended practice this standard is based upon both cumulative studies and industry input regarding practical storage limits and fifo requirements.