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piston ring for the low pressure piston

piston ring for the low pressure piston

Lock-Step Piston Ring, 12" diam.

Lock-Step Piston Ring, 12" diam.

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

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

Wellworthy Simplex patent split piston ring, 1936

Wellworthy Simplex patent split piston ring, 1936

1936
Wellworthy Simplex patent piston ring, 1936.

Wellworthy Simplex patent piston ring, 1936.

1936
Perfex compression piston outer ring, 1920

Perfex compression piston outer ring, 1920

1920
Set of patent "super limit" piston rings

Set of patent "super limit" piston rings

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