Model |
QT - metal bellows |
Seal Type |
Metal bellows mechanical seal |
Size |
Inner Diameter: 55mm
Outer Diameter: 85mm
Width: 20mm |
Static Ring Material |
Carbon graphite |
Rotating Ring Material |
Silicon carbide |
Bellows Material |
Austenitic stainless steel (such as 316L) |
Sealing Element Material |
Fluoroelastomer (FKM) for secondary seals |
Maximum Working Pressure |
3.0 MPa |
Minimum Working Pressure |
0.05 MPa |
Maximum Working Temperature |
250°C |
Minimum Working Temperature |
- 50°C |
Shaft Speed Range |
0 - 4000 RPM |
Fluid Compatibility |
Water, oils, chemicals, and high - temperature media |
Sealing Face Flatness |
≤0.0006 mm |
Sealing Face Roughness |
Ra ≤0.12 μm |
Axial Runout Tolerance |
≤0.05 mm |
Radial Runout Tolerance |
≤0.03 mm |
Spring Quantity |
Integrated within bellows structure |
Spring Equivalent Rate |
22 N/mm (derived from bellows characteristics) |
Installation Depth |
28mm |
Weight |
0.8 kg |
Leakage Rate |
≤2 ml/h at rated conditions |
Operating Medium Viscosity Range |
0.1 - 300 cSt |
Corrosion Resistance |
Excellent resistance to a wide range of corrosive media due to stainless - steel bellows |
Lubrication Requirement |
Self - lubricating with the sealed fluid |
Maintenance Interval |
Recommended every 18 months or 12000 operating hours |
Storage Conditions |
Store in a dry, cool place; temperature 0 - 35°C, humidity ≤60% |
Assembly Instructions |
Align the seal precisely with the shaft; torque bolts to 10 N·m |
Disassembly Instructions |
Release system pressure completely; use proper tools to avoid damaging the bellows |
Compatibility with Equipment |
Suitable for high - temperature, high - pressure applications in pumps, compressors, and reactors |
Cleaning Method |
Use non - abrasive solvents; clean bellows gently to avoid denting |
Replacement Parts |
Static ring, rotating ring, metal bellows assembly, secondary sealing elements |
Testing Standards |
Complies with ISO 21049 and API 682 standards |