You are buying 1 magnum super seal that goes between the motor and block.
LOWRIDER HYDRAULICS MAGNUM SEAL Block to Motor (2) Pack
LOWRIDER HYDRAULICS Shaft Seal "Super Seal"
LOWRIDER HYDRAULICS Pressure Seal (4) pack
Lowrider Hydraulics, Tank Seal *1pcs
Lowrider Hydraulics super seal for pump, aluminum, smooth, heavy duty, 1 pack
Lowrider Hydraulics, Pump Rebuild Kit: Blowproof Shaft Seal + Tank Seal *2 Kits