Style: Type 21E inch/imperial series
Dimensions:
Shaft: 1-5/8" (41.3 mm)
Seat Bore: 60.3 mm
Seat Thickness: 12.7 mm
Working Length: 33.3 mm (As measured from the rotating face to the back of the spring, under normal compression.)
Materials:
Rubber Parts: NBR Rubber
Faces: Standard Ceramic
Typical Applications: Suits Southern Cross (R Series Pumps)