Bellows seals
Metal Bellow Seal
- Shaft25 to 100 mm
- Pressure25 bar (max)
- Temperature−30 to 350 °C
The Metal Bellows Mechanical Seal is a premium, high-performance sealing solution engineered for extreme environments, hazardous fluids, and high-temperature applications. Unlike traditional pusher seals, this design features a core edge-welded metal bellows that acts as both the spring loading mechanism and a static secondary seal. Because it eliminates dynamic sliding O-rings along the shaft, it completely removes the risk of shaft fretting, hang-up, and chemical degradation of elastomers, making it the industry benchmark for critical processing lines.
Generally used in
Highly corrosive chemicals, high temperature applications, petroleum refineries.
| Seal faces | Carbon / SiC / TC vs SiC / TC |
|---|---|
| Secondary seals | Viton / Kalrez / PTFE / Grafoil / FEP / Flexible Graphite |
| Metal parts | SS-316 / AM-350 heat-treated, Inconel, Titanium, Alloy 20, Hastelloy 'C' |
| Shaft diameter | 25 to 100 mm |
|---|---|
| Pressure | 25 bar (max) |
| Temperature | −30 to 350 °C |
| Speed | 2900 rpm (max) |
Custom sizes and material combinations are made to your drawing. Confirm duty conditions with us before ordering.
Related seals
-
Bellows seals
Rubber Bellow Seal
Non-pusher, no shaft fretting
- Shaft
- 10 to 100 mm
- Pressure
- 8 bar (max)
- Temp
- −20 to 80 °C
-
Bellows seals
Teflon Bellow Seal
For acids and alkalis
- Shaft
- 16 to 80 mm
- Pressure
- 5 bar (max)
- Temp
- −20 to 90 °C
-
Single spring pusher seals
Conical Spring Seal
Compact pusher seal
- Shaft
- 10 to 100 mm
- Pressure
- 7 bar
- Temp
- −20 to 140 °C
