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 5950-01-377-5006
NSN 6220-00-218-0857
NSN 6220-01-506-9654
NSN 5855-00-631-4565
NSN 4140-00-078-5165
NSN 6135-01-219-8612
NSN 6610-00-801-4652
NSN 6130-01-360-4875
NSN 5975-01-212-6739
NSN 6620-01-617-3915
NSN 6240-01-253-0687
NSN 6650-00-361-8222