18 x 26 x 5.5 Fabric/NBR High Pressure Water Pump U-Cup Metric

This 1 piece seal was also designed for low pressure water pumps and pressure washer cleaning equipment. This seal is used downstream of the W1 set, and seals the low pressure leakage return. This seal has a much longer service life due to less friction and a specially lubricated NBR and cotton material. It works well in water and water/oil mixture fluids. W3 part numbers contain a thermoplastic header ring. Temperature: -22°F to +175°F Pressure: PSI < 1102