Delta Tool Part 908-25-013-1439 Delta O-ring Used in: 31-278 Type 1 SANDER 31-280 Type 1 SANDER 40-540 Type 1 SCROLL SAW 40-540 Type 2 SCROLL SAW 40-560 Type 2 16 IN SCROLL SAW 40-601 Type 1 18 IN SS W/STAND 40-601 Type 1 18 IN SS W/STAND 40-601 Type 2 18 IN SS W/STAND 40-601 Type 2 18 IN SS W/STAND 40-640 Type 1 20IN SCROLL SAW 40-640 Type 2 20IN SCROLL SAW BDSS100 Type 1 16IN SCROLL SAW BT1600-AR Type 1 16 IN SCROLL SAW BT1600-BR Type 1 16 IN SCROLL SAW PENTAIRSUBS Type 1 PENTAIR SUBS SM600 Type 1 16IN SCROLL SAW SS250 Type 1 SCROLL SAW