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 5999-00-886-5691
NSN 5905-01-089-8723
NSN 6130-00-631-2309
NSN 5930-01-415-7833
NSN 5985-01-202-1251
NSN 5998-01-150-6082
NSN 5930-01-530-2283
NSN 5930-00-967-3405
NSN 6135-01-113-1507
NSN 6645-00-074-4580
NSN 5998-01-519-9273
NSN 5925-01-545-3504