AMPCO SX11000037-ND is the Front Seal Driver for Ampco LF Series pumps, designed specifically for the 757 front-seal configuration and sold separately as a replacement part for LF-model equipment. As part of the LF Series, it supports the front-loading mechanical seal design that simplifies maintenance and improves cleanability, with the rotating seal retained in the driver during assembly. Cross-reference data confirms SX11000037-ND maps to Fristam 1811000037 (757 Front Seal Driver) and is listed as "DRIVER,757,FRNT SEAL,NEW DESGN LF" in LF-series catalogs.
