Style: Type 21 DIN Metric Series
Dimensions:
Shaft: 53.0 mm
Seat Bore: 73.0 mm
Seat Thickness: 12.0 mm
Working Length: 35.5 mm (As measured from the rotating face to the back of the spring, under normal compression.)
Materials:
Rubber Parts: Viton (suitable for distillates and high temperature water over 70 degrees celsius)