Style:  Type 6E Inch/Imperial Series
Dimensions: 
Shaft:  3/4" (19.0 mm) 
Seat Bore:  34.9 mm
Seat Thickness:  10.3 mm
Working Length:  18.7 mm (As measured from the rotating face to the back of the spring, under normal compression.)
Materials: 
Rubber Parts:  NBR Rubber
Faces:  Standard Ceramic