MIL-M-17191D, MILITARY SPECIFICATION: MOUNT, RESILENT, PORTSMOUTH BONDED SPOOL TYPE (22-SEP-1970) [S/S BY MIL-DTL-17191E]

MIL-M-17191D, MILITARY SPECIFICATION: MOUNT, RESILENT, PORTSMOUTH BONDED SPOOL TYPE (22-SEP-1970) [S/S BY MIL-DTL-17191E]., This specification covers the Portsmouth bonded spool series of rubber resilient mounts, together with tests for evaluating the rubber stock and the completely assembled mount. These mounts are primarily for use on submarines where applicable.