The GRACO 157630 is a tapered compression spring designed for use in GRACO's T1 and T2 Transfer Pumps. It is typically made from high-quality steel and serves to maintain proper pressure and alignment within the pump assembly. Key Features: Tapered compression spring Height: 1.15 in; Width: 1.65 in; Depth: 1.60 in Steel (assumed, not explicitly stated) GRACO T1 and T2 Transfer Pumps Tapered design for improved fit and function Compact size for integration into pump assemblies Reliable performance in demanding applications Applications:Used in GRACO T1 and T2 Transfer Pumps for spray foam and spray application systems. Installation Notes: Using genuine GRACO parts ensures optimal performance, longevity, and safety of the equipment. Ensure the pump is depressurized and disconnected from power before installation. Inspect the spring for any signs of wear or damage before installation. Follow the equipment manual for specific installation procedures.