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NorthStar Piston Ring AB9020023

North Star Air Compressor Pump Parts

Product Details
NorthStar
Brand: NorthStar
Part Number: AB9020023

Description:

(AC)

The piston rings provide compression in an air compressor pump by providing the seal in between the cylinder wall and the piston. In an oil-bath pump, there are usually two compression rings and one oil (scraper) ring to keep oil from passing the piston and into the head. In an oil-free pump, the piston is Teflon-coated and doesn’t require lubrication. If your pump is pulling oil into the head or if compression is very low (oil-bath pumps), replace the rings. If your pump isn’t pressurizing or if the piston ring is damaged along the outer perimeter (oil-free pumps), replace it. Also replace the cylinder sleeve when replacing the compression ring (oil-free pumps).


 

This item fits the following models:

Air Compressor Pump Parts - 45931, 779102

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