Edgetec Midjet 1/2" cup seal - ceramic mechanical seal. Suits Edgetec Midjet pumps and older Triflo pumps without heaters. Check measurements to ensure this is the correct mechanical seal.  Ceramic / carbon / nitrile elastomers

Dimensions:
Cup Diameter: 28.7mm
Rubber Boot Diameter: 25.7mm 
Height: 23.5mm overall
MFPN: 9-2115