Accession Number : AD0430759


Title :   EFFECT OF SHELF AGING ON MIL-P-5516 O-RINGS


Descriptive Note : Progress rept. no. 5


Corporate Author : MARE ISLAND NAVAL SHIPYARD VALLEJO CA RUBBER LAB


Personal Author(s) : Barrett, A E


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/430759.pdf


Report Date : 24 Feb 1964


Pagination or Media Count : 14


Abstract : O-rings originally conforming to military specifications and which had reached the maximum allowed storage age of 4 years, were tested after an additional 5 years of shelf aging. During the original 4 years the rings were sealed in lined envelopes, but during the ensuing 5 years, some rings were exposed to light and air, some were exposed to air with light excluded and some were kept sealed in the original envelopes. No significant changes in physical properties from the standpoint of serviceability were observed after shelf aging for 5 additional years under the above conditions. It is concluded that O rings which meet the specification requirements will give satisfactory service after at least 9 years shelf aging at moderate room temperatures.


Descriptors :   *RUBBER , *GASKETS , AGING(MATERIALS) , DEGRADATION , STORAGE , SHELF LIFE , O RINGS


Subject Categories : Adhesives, Seals and Binders
      Elastomers and Rubber


Distribution Statement : APPROVED FOR PUBLIC RELEASE