Replacement Pump Shaft Seal For Shaft Diameter 5/8 in Gasket Material Rubber Compatible with Media Type Diesel Water Seal Type Designation 68 Shaft Seal Type Mechanical Shaft Seal Shut Off Pressure (Maximum) 75 psi Spring Material Stainless Steel Spring Type Single Spring Standards ISO 9001 TS16949 Maximum Temperature 400 Degrees F Minimum Temperature -40 Degrees F Working Length 0.62 in