Specification :

UG100:
Mechanical seals of the UG100 series are amongst the most commonly used. The bellow is not subjected to any torsional stress and its ingenious design incorporates several functions, as seal face carrier, secondary sealing element and drive collar. The seal face is driven through the spring and " L" -rings. There are not bonded joints and all the face materials are interchangeable without having to modify any dimensions. Highly recommended for duties with media containing solids e.g. in waste water and sewage applications.
UG900:
The UG900 is designed for application in the medium pressure and stress range and, within its operating limits, can be universally used in pumps. Just one bellows unit per diameter can be used for all installation lengths. Bellows and spring are free of torsional strain.