Suitable For Use With~Series LR Flanged In-Line System Lubricated Circulating Pumps, Series PL-30 and PL-36 Maintenance Free Pumps, Series 60 1 in AA and 1-1/4 in AA Size Small Flex Coupled In-Line Centrifugal Pumps, Series 100 Inline Booster Pumps and Series MF 60 1 x 5-1/4 in and 1-1/4 x 5-1/4 in Small Flex Coupled In-Line Centrifugal Pumps