O-Ring, American Pneumatic Tool part number 1280583023, previously 18701, listed at Crowder Supply as APT18701. It seals a pressure joint inside the scaler, and because elastomer takes a set long before the metal around it wears, it is one of the first items to replace when a machine starts weeping air or oil.
It appears on the 307 & 317 Needle Scaler breakdown. The tool itself is the APT 307 Pneumatic Needle Scaler. Compare it to the reference callout on the diagram to be sure it is the position you need.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram library. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280583023
- Previous part number: 18701
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT18701
- Listed on breakdowns for: 307 & 317 Needle Scaler
