Shi hwang is the technical director at warco biltrite.
Viton shelf life.
Elastomer and o ring shelf life recommendation summary with proper storage.
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.
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.
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.
Natural rubber pure gum.
Sae arp5316 is the most widely referenced guide for data recording procedures packaging and storing of aerospace elastomeric seals.
Previously known as arp5316 recommended practice this standard is based upon both cumulative studies and industry input regarding practical storage limits and fifo requirements.
Viton freeflow extrusion process aids also improve processing increase output and reduce waste.
As stated in the studies above rubber seals have the capability to last long periods of time in storage.
Key elements of the arp5316d standard include.
Elastomers are susceptible to deterioration by aging.
Global o ring and seal adheres to the sae international aerospace standard as5316 for all elastomer product shelf life and storage conditions.
Visit our polymer pages for more information about specific polymers.
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.
Arp5316 can be a useful guideline for companies who don t have a recommended shelf life control on elastomeric.
There can be some confusion between the difference between the service life of a rubber part and its.
Shelf life vs service life.
Table of elastomer shelf life recommendation.
Shelf life of rubber products.
Apr 5316 is often used as a guideline in determining useful shelf life of elastomers used in other industries.
O ring shelf life compliance standard.
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.
