Automotive Water Pump Mechanical Seal WM FBS

In an Automotive Water Pump Mechanical Seal WM FBS, two ringed “faces” or seal heads rest flat against each other (but are not attached) in the seal chamber, which is located between the volute (the “wet end” of the pump) and the motor. An actuator, such as a spring, presses the faces close to each other. The rotating motor is inserted through the two ringed faces and attached to the impeller. As the motor shaft rotates, the upper seal (closer to the motor) rotates with the shaft. The bottom seal closer to the volute remains stationary. This action creates a sealing interface that keeps the water in the volute and prevents leakage. A minimal amount of water might escape the sealing interface but this liquid essentially acts as a lubricant for the seal and will eventually evaporate from heat. Secondary seals, also commonly ring-shaped, encompass the primary seal faces to create an additional barrier.

Materials of Automotive Water Pump Mechanical Seal WM FBS

Stationary ring: Ceramic, Silicon Carbide

Rotary ring: Silicon Carbide

Secondary seal: NBR, Viton, PTFE

Spring and metal parts: SS304, SS316

Operating Limits of Automotive Water Pump Mechanical Seal WM FBS

● Pressure: ≤0.3MPa

● Rotary Speed: ≤ 6800r/min

● Temperature:  -30℃ ~+150℃  

● Medium:Clean water,seawater,

● gas engine antifreeze

Combined Materials of Automotive Water Pump Mechanical Seal WM FBS

● Rotary Ring(Ceramic/SiC)

● Stationary Ring (Plastic Carbon/ Carbon/Sic)

● Spring (65Mn/Sus304/Sus316)

● Axial Pipe(Sus304/Sus316)

● Stationary Seat(Sus304/Sus316)

● Bellows (nbr/EPDM/HNBR/viton/)

● Outside Cup Gasket (Sus304/Sus316)

● Inside Cup Gasket (nbr/EPDM/HNBR/viton)