The 32307928 low pressure ring set includes all three piston rings for the low pressure side of the 2475 piston compressor pump from Ingersoll Rand. Typically the rings are replaced when oil is getting downstream from the compressor pump or the air compressor is slow to build pressure.
If you are in need of rings for both the HP and LP side of the pump, you may want to consider the Ring and Gasket Kit for the 2475 compressor.
If you only need the high pressure ring set, you would want to purchase item# 32307910
Fits the following pumps from Ingersoll Rand:
Part #: 32307910
Part #: 2475-LOLS
Part #: 2475
Part #: 32301426
Part #: 32301517
Part #: 32247868