Impeller: AISI 304 SS open impeller;Diffuser Plate: AISI 304 SS with Polyurethane coating for maximum resistance to abrasion;Casing: AISI 304 SS;Mechanical Seal: Silicon carbide sealing faces, all metal components of AISI type 300 stainless steel running in protected oil chamber;Elastomers: BUNA-N;Shaft: AISI type 304 stainless steel high strength pump shaft with keyed and locking cap screw impeller fastening;Motor: Air filled class F insulated design for continuous use;Designed for Continuous Operation: Pump ratings are within the motor’s working limits and can be operated continuously without damage;Bearings: Upper and lower heavy duty ball bearing construction