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Cat Pumps 21985 Backup Ring, PTFE, 284, 290, 333+
Replace a worn or damaged cylinder back-up ring on a CAT piston pump. The CAT Pumps 21985 Cylinder Back-Up Ring is made of PTFE material and fits on popular pump models like the 290 and 333.
- Compatible with select 3-frame and 4-frame piston pumps
- PTFE construction
- Genuine CAT Pumps OEM replacement part
Fits On These Pumps:
- 284
- 290
- 291
- 331
- 333
- 335
