
Single end, multiple springs, balanced cartridge mechanical seal with spring protector and independent direction of rotation. Supports external seal flush or no-flush operation. Springs isolated from medium to prevent jamming. Stationary and rotary rings palletized with L-style pad for higher flexibility under temperature changes. Unlike AS ZGJ, this seal works with devices that do not have or need a cooling system. Conforms to DIN24960, ISO3069, ANSI B73.1M, JB/T 12391-2015 standards. Inner diameter range: 35–170 mm.
Rotary Face / Stationary Face / Elastomer / Spring / Metal Parts
SiC/TC (Rotary) / SiC/TC (Stationary) / FKM/Aflas/EPDM (Elastomers) / SS304/SS316/HC276 (Springs) / 2Cr13/SS304/SS316L/2507/2205 (Metal Parts)
| Model | Materials | GA |
|---|---|---|
| AS ZWJ | SiC/TC (Rotary) / SiC/TC (Stationary) / FKM/Aflas/EPDM (Elastomers) / SS304/SS316/HC276 (Springs) / 2Cr13/SS304/SS316L/2507/2205 (Metal Parts) | — |
Pressure
0 ~ 1.2 MPa
Temperature
-20 ~ 130 ºC
Linear Speed
10 m/s or less
Mediums
Paper pulp, coal cinder, slag, ash and other fluids with solid powder. Solid capacity: 30% or less.
Customization Available
Changes of materials for getting other operating parameters are possible. Contact us with your requirements.

Single end, multiple springs, balanced cartridge mechanical seal with spring protector and independent direction of rotation. The compensation components support the sleeve while springs remain isolated from the medium, preventing jamming from high viscosity and crystallization. Easy installation without disassembling the seal cavity. Conforms to DIN24960, ISO3069, ANSI B1M standards. Inner diameter range: 35–170 mm. Applications include coal washery, mining, sewage treatment, paper making, metallurgy, power plants, and chemical engineering.

Single end, multiple springs, balanced cartridge mechanical seal with spring protector, independent direction of rotation and static compensation structure. Springs housed in stationary component cartridge, isolated from medium to prevent jamming from high viscosity and crystallization. Compensation components support the sleeve for extended lifetime. Easy installation without disassembling the seal cavity. Conforms to DIN24960, ISO3069, ANSI B1M standards. Inner diameter range: 35–170 mm.

Single end, multiple springs, unbalanced cartridge mechanical seal with internal bearing kit sealed by 2 pieces of framework oil seals. Independent direction of rotation. Conforms to API682 standard. Inner diameter: 25 mm. Suitable for limewater and aqueous solutions containing chloride ions.
Compare adjacent seal types to find the best fit for your service conditions, pressure and temperature range.

Specialized seals for paper pulp pumps, stock preparation, and pulp & paper mill equipment.

Precision mechanical seals for sand mills, bead mills, and grinding equipment.

Seal support systems including API Plan 52/53 vessels, cyclone separators, flow units, and barrier liquid boosters.

Universal and OEM cartridge seals for pumps, compressors, and general rotating equipment.