Seals and Spacers Kit for Upper 2900 Assembly but not for older ( before 2005 ) 2900 Fleck Model Valves.This kit comes with 6 spacers, 7 seals and 1 end spacer for newer Fleck 2900s ( upper ).Made to be used with the Piston assembly, 61540, which is also unique for the 2900s ( different than 60090-HF used in older 2900 valves ).Kit 61530 INCLUDES:( 7 ) Seal, pn 10545( 6 ) Spacer, pn 11451( 1 ) End spacer, pn 10757 2900s is ONE Piece brass valve body ( since 2005 ), and older ( original, pre-2005 ) 2900 is a Two Piece ( bolted together ) valve body.Older 2900 ( before 2005 ) would use Fleck part # 60121 instead.