scope:

This specification covers vulcanized synthetic rubber gasket materials of nominal 50 and 65 durometer hardness.

Gasket materials shall be furnished in the following types and classes, as specified (see 6.2):

Type I - Nominal 50 durometer hardness Class 1 - Oil resistant (chloroprene polymer) Class 2 - Non-oil resistant (styrene-butadiene copolymer) Class 3 - Phosphate ester resistant (isoprene-isobutylene copolymer) Class 5 - Fuel resistant (acrylonitrile-butadiene copolymer) Type II - Nominal 65 durometer hardness Class 1 - Oil resistant (chloroprene polymer) Class 2 - Non-oil resistant (styrene-butadiene copolymer) Class 3 - Phosphate ester resistant (isoprene-isobutylene copolymer) Class 5 - Fuel resistant (acrylonitrile-butadiene copolymer)

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 55Z3, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

intended Use:

This material is intended for general gasket use but is not intended for use as a gasket in hatches, air ports, or watertight and airtight doors.