GRACO Spring, Plunger Model 100 Pump - (SKU: 556943)The GRACO 556943 is a spring and plunger assembly designed for use in the Model 100 Pump. Its primary function is to facilitate the reciprocating action within the pump, ensuring reliable operation for lubrication or fluid transfer applications. The material is not explicitly specified, but typical GRACO pump springs are made from high grade steel for durability and consistent performance. Key Features: Spring, Plunger Model 100 Pump GRACO Model 100

The GRACO 177664 HOUSING

Corrosion-resistant plated steel core with flexible PVC jacket

Professional and industrial lubrication systems

Always verify correct part numbers in your owners manual

The GRACO 113484 SEAL

Pipe Adapter

Provides secure coverage for pails

Self-priming

Follow all safety guidelines provided by GRACO during installation and operation

but it is intended to facilitate the transfer of fluids by drawing them into the system

Lever Spring Tensioning

Orb and Boyer systems