GF03 is mechanical seal type A, R, B, G for Grundfos pumps
It has two rubber bellow standards.
One is low foot standard and another one is Long foot standard, which show two different woking length.G3-12 , GF03-12 ,CHI-12 (High/Low Foot) Rubber Bellow Mechanical Seal For Shaft 12mm CH,CHI,CHE,CRK,SPK,TP,AP Pumps ( P/N 405096)
G3-16 , GF03-16 , CHI-16 (High/Low Foot) Rubber Bellow Mechanical Seal Shaft 16mm For CH,CHI,CHE,CRK,SPK,TP Pumps ( P/N 425763 )
![425763 Rubber Bellow Mechanical Seal for Grundfos CH, Spk, Tp](//image.made-in-china.com/226f3j00hDGQtfjBVbuk/425763-Rubber-Bellow-Mechanical-Seal-for-Grundfos-CH-Spk-Tp.webp)
![425763 Rubber Bellow Mechanical Seal for Grundfos CH, Spk, Tp](//image.made-in-china.com/226f3j00MTjtcIdfaRhV/425763-Rubber-Bellow-Mechanical-Seal-for-Grundfos-CH-Spk-Tp.webp)