Six holes around top of flange
A tubular metal item designed primarily as a replaceable wear surface within the cylinder bore of a piston type internal combustion engine, compressor, or reciprocating pump.
NSN 5975-01-529-5783
NSN 5855-01-073-9063
NSN 2925-01-476-3224
NSN 5945-00-827-2158
NSN 6610-00-898-2166
NSN 5905-01-420-1012
NSN 6320-00-831-2227
NSN 6620-01-187-7267
NSN 5960-01-170-4057
NSN 6620-00-079-0311
NSN 5990-01-615-7823
NSN 5895-01-171-7250