VTG LOT OF 2 Perfect Circle Piston Ring Expander Tools 4-5/8 +.020 Instructions
USD 145.00 USD
Specifications
| Brand | Perfect Circle Tool Co |
| Type | Piston Ring Expander |
| Warranty | No Warranty |
| System Of Measurement | Specialty |
| Size | 4-5/8" |
| Manufacturer Part Number | 40103 |
| Set Or Single Item | Set |
| Drive Type | Specialty |
| Country Of Origin | United States |
These tools were used to expand piston rings for installation onto, or removal from, engine pistons. This is a piston ring expander / installer / remover tool, not a piston ring compressor. U.S. Patent 1,764,146 describes this type of tool as expanding a piston ring within a circular collar so the ring can be slipped over the piston while reducing distortion.
