108 Single Face Submersible Pump Seal Framework

The 108 single face submersible pump seal is a proven sealing solution widely used in submersible pumps for clean water, sewage and alkali water service. It combines a single face mechanical seal with a framework oil seal, forming a double protection barrier that keeps water out of the motor chamber even under submerged conditions.

The multi-springs of this submersible pump seal do not contact the medium, which prevents blocking by sand and debris, and the double-balanced structure on the medium side maintains stable face loading during operation. With a short inboard length, the 108 submersible pump seal fits compact submersible pump designs and is easy to install and maintain.

This submersible pump seal operates with shaft diameters from 10 mm to 55 mm, pressures up to 0.8MPa and media temperatures from -20°C to 150°C. Low-pressure circulating water is introduced between the primary seal and the oil seal, which improves lubrication of the first seal face and carries off friction heat and leakage.

The rotary and stationary rings are available in carbon, silicon carbide, tungsten carbide and ceramic, with O-rings in EPDM, NBR, AFLAS, Kalrez or PTFE and springs and metal parts in SUS304 or SUS316. Excellent wear-resistant friction pairs give the 108 single face submersible pump seal a long service life in continuous submerged duty.