Graco 108285 Packing U-Cup

The Graco 108285 Packing U-Cup is designed to create a sealing barrier within fluid handling equipment, by fitting tightly around moving shafts or pistons during operation. It works by using its U-shaped profile to maintain contact pressure against internal surfaces, supporting control of the movement and reducing leakage as components cycle back and forth. This component is typically positioned inside compatible sprayer pumps, cylinders, or fluid sections where sealing between moving and stationary parts is required. The part is manufactured for use in designated spraying systems and operations as part of the internal sealing assembly involved in pressure and fluid transfer operations.