The society of aerospace engineers sae issued aerospace recommended practice arp 5316 was issued in 1998 to supercede mil hdbk 695c canceled as the aerospace industry standard.
Viton shelf life.
Viton freeflow extrusion process aids also improve processing increase output and reduce waste.
Products made with viton fluoroelastomers retain their flexibility shape and seal when exposed to chemicals and high temperatures.
Table of elastomer shelf life recommendation.
Experience demonstrates that storage conditions impact the useful life of o rings than generalized shelf life time.
Shelf life guideline these numbers represent average shelf life under normal dry cool storage conditions away from direct sun uv rays and should be used for guidance reference purposes only.
Arp5316 can be a useful guideline for companies who don t have a recommended shelf life control on elastomeric.
Shelf life of rubber products.
Elastomer and o ring shelf life is governed by sae international standard arp5316d that calls out all aspects of o ring shelf life.
Unless compliance regulated shelf life of all rubber parts should be considered unlimited.
As stated in the studies above rubber seals have the capability to last long periods of time in storage.
The rate of deterioration depends on a number of factors temperature store between 15 25 c 59 77 f and away from direct heat sources light avoid exposure to direct sunlight artificial light or uv humidity below 65 recommended.
Natural rubber pure gum.
Viton fkm 20 years hypalon csm 5 10 years neoprene cr 5 10 years e pdm epdm 5 10 years butyl iir 5 10 years nitrile.
Shelf life vs service life.
If the shelf life has expired products should be carefully evaluated for possible use as originally intended before discarding products solely based on the suggested shelf life.
O ring shelf life compliance standard.
Apr 5316 is often used as a guideline in determining useful shelf life of elastomers used in other industries.
Previously known as arp5316 recommended practice this standard is based upon both cumulative studies and industry input regarding practical storage limits and fifo requirements.
Elastomer and o ring shelf life recommendation summary with proper storage.
Elastomers are susceptible to deterioration by aging.
Visit our polymer pages for more information about specific polymers.
Shi hwang is the technical director at warco biltrite.
Sae arp5316 is the most widely referenced guide for data recording procedures packaging and storing of aerospace elastomeric seals.
Temperature o rings need to be stored below 100f 38c and stored away from direct sunlight and sources of heat radiators heaters boilers and above 59f 15c.
