Accession Number:

AD0260920

Title:

DEVELOPMENT OF SEALS FOR HIGH PRESSURE AIR SYSTEMS IN SUBMARINES

Descriptive Note:

Corporate Author:

MARE ISLAND NAVAL SHIPYARD VALLEJO CALIF RUBBER LAB

Personal Author(s):

Report Date:

1961-07-31

Pagination or Media Count:

1.0

Abstract:

Studies were conducted to develop a formulation for rubber seals to be used in the high pressure air systems of FBM submarines. The best stock which the Laboratory had developed previously for this service was a Viton A-HV stock identified as Compound A. An objectionable feature of this stock was its tendency to backrind when molding. A new Viton A-HV stock 377-89 was developed which does not backrind and which is also suitable for use in seals for high pressure gas service. Four sets of O-rings submitted by the Parker Seal Company were tested for resistance to swelling caused by rapid release of 5000 psi air pressure. Two of the sets of O-rings were fairly resistant to swelling, but were not equal to Compound A or 377-89 in this regard. O-rings made by Linear Incorporated and conforming to Classes A and B of specification MIL-P-5516B were tested for swelling. Both the Class A 88 shore and Class B 68 Shore O-rings were seriously swollen, and the Class B O-rings exhibited many small blisters after decompression. The Class A O-rings were considered to be of marginal utility in high pressure air systems. The Class B O-rings were considered to be unsuitable for this purpose. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE