Looking for Grundfos Seal at competitive price. Zl – seals had a vide range of mechanical seals, and GLF5 is an original Grundfos seal with single spring o-ring Mounted semi-cartridge seals with push-fit head Suitable for Grundfos Pumps. In this seal high quality material is use, that it can be last long or it can be able to work in every type of weathers. You can get it from us at best price with last long life.