AS M74R-D
Astra Seals AS M74R-D Double End Mechanical Seal, improved from traditional M74-D. Double end, small spring, unbalanced, independent direction of rotation, drive sleeve transmission, back to back design. Transmission lug changed from sharp edges to rounded edges to reduce damage to rotary seal ring. Alternative to KSB and Kaiquan original seals. Inner diameter: 20 mm to 300 mm. Pressure: ≤1.6 MPa, Temperature: -20~180°C, Linear Speed: ≤20 m/s. Standards: DIN24960, ISO3069, GB6556.
Materials
Rotary Face / Stationary Face / Elastomer / Spring / Metal Parts
Carbon/SiC/TC (Rotary) / Carbon/SiC/TC (Stationary) / NBR/EPDM/Viton/FFKM (Elastomers) / SS304/SS316/PH17-4/HC-276 (Springs) / 410S/SS304/SS316/SS316L/Hastelloy (Metal Parts)
2 Variants
| Model | Materials | GA |
|---|---|---|
| M74R-D | Carbon/SiC/TC (Rotary) / Carbon/SiC/TC (Stationary) / NBR/EPDM/Viton/FFKM (Elastomers) / SS304/SS316/PH17-4/HC-276 (Springs) / 410S/SS304/SS316/SS316L/Hastelloy (Metal Parts) | — |
| AS M74RF-D | SiC/TC (Rotary) / SiC/Carbon (Stationary) / Viton/EPDM/PTFE (Elastomers) / SS316/HC276 (Springs) / SS304/SS316L (Metal Parts) | — |
Operating Conditions & Materials
Pressure
1.6 MPa or less
Temperature
-20 ~ 180 ºC
Linear Speed
20 m/s or less
Mediums
Oil, water, acid, alkali, organic solvents and mediums that are easy to be crystallized or have granules and high viscosity.
Customization Available
Changes of materials for getting other operating parameters are possible. Contact us with your requirements.
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