ST1-12 - 12 mm mechanical seal

The ST1-12 mechanical seal by Pedrollo stands out for the construction of the fixed ring in silicon carbide and the spring made of AISI316 stainless steel.

It is mainly used in small and medium-sized Pedrollo surface electric pumps with pump body, cover, impeller and shaft in AISI 316L stainless steel.

Suitable for electric pumps with a 12 mm crankshaft.

The mechanical seal's job is to keep the hydraulic part separate from the electrical part. It prevents water from reaching the bearings and motor.

The ST1-12 seal allows shaft rotation without using a rigid seal.

The seal consists of two parts: a rotating one and a fixed one. Made of silicon carbide, graphite, NBR, and AISI 316L stainless steel.

The ST1-12 seal is constructed of more wear and corrosion resistant materials.

The seal inside the electric pump is one of the most stressed parts and is therefore subject to wear. It's important to replace it when water is found in the motor.

Original spare part for model PK 90, PQ 70, PQ 80-81-90,PQ 60-BS, PQ 65-BS, PQ 81-Bs, PQA 60, PQA 70, PQA 72, PQA 80, PQA 82, PQA 90, PQ 81/PRO, PV 55, PV 60, PV 65, PV 70, PV 81, PV 90, PQ 81 Bs-PRO.