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Lock-Step Piston Ring, 12" diam.

Set of patent "super limit" piston rings

Two "no oil metal" split piston rings for 8" diam.

One spare piston ring for the low pressure piston.

piston ring for the low pressure piston

Set of patent twin piston rings, 7 1/2" diam.

Set of patent twin piston rings

"Campbell and Banks" Piston Ring with springs and packing (sectioned)

"Campbell and Banks" Piston Ring

"No oil metal" solid piston ring for 26 1/2" diam. cylinder. Loftus Perkins's patent A.D. 1872, No.3845

"No oil metal" solid piston ring for 26 1/2" diam. cylinder. Loftus Perkins's patent A.D. 1872