PWT50-32-200S, PWT65-50-160S, PWT80-50-200S, PWT100-65-160S, PWT100-65-200S, PWT100-65-250S, PWT125-80-200S, PWT125-100-200S, PWT100-80-160S, PWT80-50-315S, PWT100-65-315S, PWT125-80-315S, PWT125-100-315S – Mechanical Seals

Structural features:

1. Single-acting, with a wave spring and a compact design. When in use, the spring direction does not matter.

2. Depending on the specific application, auxiliary sealing rings can be made from nitrile rubber, fluororubber, or ethylene-propylene rubber.

3. Complies with ISO 3069, DIN 24960, and GB 6556 standards, offering excellent versatility.

Applicable medium:

Oil, water, acids, bases, salts, and more

Work parameters:

Fixed substance content: ≤10%

Warm Temperature: ≤180°C

Press Force: ≤1.0 MPa

Axis Diameter: ≤100mm

Material parameters:
Main material: 304, 316L or 2205, 2507, 1.4529
Sealing ring material: Graphite, silicon carbide, tungsten carbide

Main applications:

This type of mechanical seal is primarily used in various types of water pumps and chemical pumps.

Common models:

PWT 50-32-125S PWT 50-32-160S PWT 50-32-200S PWT 50-32-250S

PWT 65-50-125S PWT 65-50-160S PWT 65-40-200S PWT 65-40-250S

PWT 65-40-315S PWT 80-65-125S PWT 80-65-160S PWT 80-50-315S

PWT 100-80-125S PWT100-80-160S PWT100-65-200S PWT100-65-250S

PWT125-80-200S PWT125-100-200S PWT125-80-250S PWT125-100-250S

PWT125-80-315S PWT125-100-315S PWT125-80-400S PWT125-100-400S

PWT150-125-200S PWT150-125-250S PWT150-125-315S PWT150-125-400S

PWT200-150-315S PWT200-150-400S PWT200-150-500S PWT250-200-315S

PWT250-200-400S PWT250-200-500S PWT300-250-315S PWT300-250-400S

PWT300-250-500S PWT350-300-315S PWT350-300-400S PWT350-300-500S

Note: Since pumps serve a variety of purposes, the sealing materials (friction pairs) also differ. To ensure reliable sealing performance,
The manufacturer recommends the following:
1. Clean water (without particulate matter conditions) – The dynamic ring friction pair is made of alloy, while the stationary ring friction pair is made of graphite.
2. Highly corrosive environments (conditions involving particulate matter) – For the dynamic seal pair, select silicon carbide; for the stationary seal pair, also choose silicon carbide.
3. Conditions involving particles and significant vibration – Select (alloy) for the dynamic ring friction pair, and (alloy) for the stationary ring friction pair.
4. Customization is also available upon customer request. If no specific request is made, the default option will be (clear water).

Installation Use Requirements :

1. The radial runout of the equipment shaft should not exceed 0.04 millimeters, with axial runout not exceeding 0.1 millimeters;
2. The sealing cavity of the equipment should be kept clean during installation, and sealing components must be thoroughly cleaned. Ensure that the sealing faces remain intact to prevent contaminants and dust from entering the sealing area.
3. During installation, avoid any impact or hammering to prevent damaging the mechanical seal through friction, which could lead to sealing failure.
4. During installation, apply a layer of clean machine oil to the surfaces that will come into contact with the seal, ensuring smooth installation.
5. When installing the stationary ring gland, tighten the screws evenly to ensure the stationary ring face is perpendicular to the shaft centerline.
6. After installation, gently push the moving ring by hand to ensure it moves freely along the shaft while maintaining some elasticity.
7. After installation, manually turn the shaft—there should be no sensation of unevenness or heaviness.
8. Before starting operation, the equipment must be fully charged with the medium to prevent dry friction, which could lead to seal failure.