Shaft seal

Only use one of the following shaft seals.

3.3.1 Mechanical seal

The mechanical seal has a drip leak with limited function.

• Single mechanical seal

• Single side mechanical seal with stop seal

• Double sided mechanical seal with external locking

3.3.2 Packing sleeve

To derive frictional heat, the packing sleeve must always leak slightly.

Auxiliary operating system

3.4.1 Sealing operation system

Only use one of the following sealed operating systems.

Blocking

Figure 6 Single side mechanical seal with blocking seal

(Schematic diagram)

1 Transmission medium

2 Single mechanical seal

3 Sealing medium (non pressure)

When blocking, the pressure of conveying medium is greater than that of sealing medium. The sealing surface is transported by

The medium is lubricated.

Application examples:

• Transmission medium that encounters air crystallization and thus causes long-term damage to seals

• Prevent olfactory interference

• Cooling seals

Conveying medium

2 Double mechanical seal

3 Sealing medium (under pressure)

When sealing, the pressure of sealing medium is greater than that of conveying medium. The sealing surface is sealed by

The medium is lubricated.

Application examples:

• Transportation that crystallizes or contains solid materials, thus causing long-term damage to seals

medium

• Toxic conveying media

• Transport media hazardous to the environment

Recommended reading: ALL WEILER Alweiler, ALLWEILER authorized agent, ALLWEILER Screw pump