FWG80-160A FWG100-200B FLG65-125(I) FLG125-200(I) Mechanical Seals

Structural features:

1. Single-ended design with rubber bellows compensation, offering strong resistance to clogging. When in use, the spring direction doesn’t matter.

2. The auxiliary sealing rings are made of nitrile rubber, fluoro rubber, ethylene-propylene rubber, and silicone rubber.

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

Applicable medium:

In clean water containing oil, water, acids, alkalis, salts, as well as in wastewater and oily effluents with suspended particles.

Work parameters:

Fixed substance content: ≤10%

Warm Temperature: ≤180°C

Press Force: ≤1.5 MPa

Axis Diameter: ≤100 mm

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, chemical pumps, sewage pumps, wastewater pumps, and sludge oil pumps.

Common models:

FWG 40-125(I) FWG 40-125A FWG 40-160(I)

FWG 40-160A FWG 40-160B FWG 40-200(I)

FWG 40-200A FWG 40-200B FWG 40-250(I)

FWG 40-250A FWG 40-250B FWG 50–100 (I)

FWG 50-100 (I) A FWG 50-125(I) FWG 50–125 (I) A

FWG 50-160(I) FWG 50-160A FWG 50-160B

FWG 50-200(I) FWG 50-200A FWG 50-200B

FWG 50-250(I) FWG 50-250A FWG 50-250B

FWG 50-250C FWG 65-100(I) FWG 65-100A

FWG 65-125(I) FWG 65-125A FWG 65-160(I)

FWG 65-160A FWG 65-160B FWG 65-200(I)

FWG 65-200A FWG 65-200B FWG 65-250(I)

FWG 65-250A FWG 65-250B FWG 65-250C

FWG 65-315(I) FWG 65-315A FWG 65-315B

FWG 65-315C FWG 80-100 (I) FWG 80-100A

FWG 80-125(I) FWG 80-125A FWG 80-160(I)

FWG 80-160A FWG 80-160B FWG 80-200(I)

FWG 80-200A FWG 80-200B FWG 80-250(I)

FWG 80-250A FWG 80-250B FWG 80-315(I)

FWG 80-315A FWG 80-315B FWG 80-315C

FWG 100-100(I) FWG 100-100A FWG 100-125(I)

FWG 100-125A FWG 100-160(I) FWG 100-160A

FWG 100-160B FWG 100-200(I) FWG 100-200A

FWG 100-200B FWG 100-250(I) FWG 100-250A

FWG 100-250B FWG 100-315(I) FWG 100-315A

FWG 100-315B FWG 100-315C FWG 125-125(I)

FWG 125-125A FWG 125-160(I) FWG 125-160A

FWG 125-160B FWG 125-200(I) FWG 125-200A

FWG 125-200B FWG 125-250(I) FWG 125-250A

FWG 125-250B FWG 125-315(I) FWG 125-315A

FWG 125-315B FWG 125-315C FWG 150-125(I)

FWG 150-125(I)A FWG 150-160 (I) FWG 150–160 (I) A

FWG 150-160(I)B FWG 150–200 (I) FWG 150-250(I)

FWG 150-315(I) FWG 150–200 (I) FWG 150–400

FWG 150–500 FWG 200-200(I) FWG 200–250 (I)

FWG 200-315(I) FWG 200–400 (I) A FWG 200–400 (I)B

FWG 200–500 (I) A FWG 250-250 FWG 250-315

FWG 250-315A FWG 250-315B FWG 250-400(I)

FWG 300-250 FWG 300–315 FWG 300-400A

FLG 40-125(I) FLG 40-125A FLG 40-160(I)

FLG 40-160A FLG 40-160B FLG 40-200(I)

FLG 40-200A FLG 40-200B FLG 40-250(I)

FLG 40–250A FLG 40-250B FLG 50–100 (I)

FLG 50–100 (I) A FLG 50-125(I) FLG 50–125 (I) A

FLG 50-160(I) FLG 50-160A FLG 50-160B

FLG 50-200(I) FLG 50-200A FLG 50-200B

FLG 50-250(I) FLG 50-250A FLG 50-250B

FLG 50-250C FLG 65-100(I) FLG 65-100A

FLG 65-125(I) FLG 65-125A FLG 65-160(I)

FLG 65-160A FLG 65-160B FLG 65-200(I)

FLG 65-200A FLG 65-200B FLG 65-250(I)

FLG 65-250A FLG 65-250B FLG 65-250C

FLG 65-315(I) FLG 65-315A FLG 65-315B

FLG 65-315C FLG 80-100 (I) FLG 80-100A

FLG 80-125(I) FLG 80-125A FLG 80-160(I)

FLG 80-160A FLG 80-160B FLG 80-200(I)

FLG 80-200A FLG 80-200B FLG 80-250(I)

FLG 80-250A FLG 80-250B FLG 80-315(I)

FLG 80-315A FLG 80-315B FLG 80-315C

FLG 100-100(I) FLG 100-100A FLG 100-125(I)

FLG 100-125A FLG 100-160(I) FLG 100-160A

FLG 100-160B FLG 100–200 (I) FLG 100-200A

FLG 100-200B FLG 100-250(I) FLG 100-250A

FLG 100-250B FLG 100-315(I) FLG 100-315A

FLG 100-315B FLG 100-315C FLG 125-125(I)

FLG 125-125A FLG 125-160(I) FLG 125-160A

FLG 125-160B FLG 125-200(I) FLG 125-200A

FLG 125-200B FLG 125-250(I) FLG 125-250A

FLG 125-250B FLG 125-315(I) FLG 125-315A

FLG 125-315B FLG 125-315C FLG 150-125(I)

FLG 150-125(I)A FLG 150-160 (I) FLG 150–160 (I) A

FLG 150-160(I)B FLG 150–200 (I) FLG 150-250(I)

FLG 150-315(I) FLG 150–200 (I) FLG 150–400

FLG 150–500 FLG 200-200(I) FLG 200–250 (I)

FLG 200-315(I) FLG 200–400 (I) A FLG 200–400 (I)B

FLG 200–500 (I) A FLG 250-250 FLG 250-315

FLG 250-315A FLG 250-315B FLG 250-400(I)

FLG 300-250 FLG 300-315 FLG 300-400A

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)—Choose an alloy for the dynamic sealing pair and graphite for the static sealing pair.
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 mm, with axial runout not exceeding 0.1 mm;
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 knocking to prevent damaging the mechanical seal through friction, which could lead to sealing failure.
4. During installation, apply a thin 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 the equipment, it must be fully charged with the medium to prevent dry friction, which could lead to seal failure.