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You Are Here: Front Page » Air Compressor Parts: Belts, Filters, Regulators & More » Sears Craftsman Air Compressor Parts | Master Tool Repair » Sears Craftsman Air Compressor Pump Parts » Craftsman Oil Free Pump Parts » DAC-308 Compression Ring MASTERTOOLREPAIR.COM

RING COMP PRE FORMED DAC-308 - 11.45 $9.16

Craftsman Oil Free Pump Parts

Product Details
DAC-308 - RING COMP PRE FORMED

Found under the following brands: Annovi Reverberi-AR, Westward, Bostitch, Black & Decker, Craftsman, Devilbiss Air Power, DeWalt, Emglo, Excell, Porter Cable, Speedaire
Part Number: DAC-308

This item is contained in the following kits:

Description:

2.10L X 1.80W X 0.30H (1 Used).

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).



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