Bulk Water Grundfos Pump Mechanical Seal GLF-T-12.7mm
Technical Specifications
| Parameter |
Value |
| Temperature Range |
-30℃ to +200℃ |
| Maximum Pressure |
≤ 1.2 MPa |
| Maximum Speed |
≤ 10 m/s |
| Compatible Medium |
Water |
Material Composition
| Component |
Material |
| Rotary Ring |
SiC/VIT |
| Stationary Ring |
SiC/VIT |
| Spring |
SUS304/SUS316 |
| Stationary Seat |
SUS304/SUS316 |
| Secondary Seal |
FKM/EPDM |
| Rotary Ring Holder |
SUS304/SUS316 |
Preparation Requirements
- Shaft outside diameter tolerance: ±0.05mm
- Shaft run out: <0.1mm
- Shaft end float: <0.13mm
- No sharp edges on the shaft over the O-ring area
Important Note
During installation, avoid scratching or damaging the O-ring. If any damage occurs, please contact us for replacement.
Installation Instructions
The complete cartridge seal set is cleaned and thoroughly leak-tested before sale. To prevent damage, do not disassemble or clean components before installation.
Fitting Specifications
The fitting allowance between seal and shaft is dl h6 0.8. Ensure a leading edge at the shaft end. The shaft outside diameter at screw position should be 0.1-0.2mm smaller to prevent over-tightening. Lubricate the shaft with oil before installation.
Installation Steps
- Place the cartridge seal into the pump chamber
- Tighten the four flange screw bolts, ensuring the medium leading-in hole "G" is at the top position
- Tighten the four set screws to position the shaft sleeve on the shaft
- Remove the four gauge plates (retain for future installation and disassembly)
- Connect the medium lead-in pipe with hole "G" to flush away friction heat and maintain seal chamber cleanliness during pump operation
Post-Installation Check
After completing installation, manually rotate the shaft to verify smooth rotation. If the shaft does not rotate smoothly, the seal has been improperly installed.
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