for applications in which the process fluid is incompatible with common elastomers or where the cost of custom O-Rings is prohibitive
. This bellows seal is used primarily in the chemical and petrochemical industries.
The high-strength, low-spring-rate bellows core delivers low-heat generation and reliable sealing performance. The self-cleaning rotary bellows design will reduce the clogging associated with sealing fluids with solids in suspension. The tandem bellows arrangement provides maximum pressure capability and safety performance.
Features:
| Dual seal - tandem arrangement |
| Welded metal bellows eliminates dynamic O-Rings |
| High-efficiency pumping mechanism creates a helical flow pattern for ideal internal cooling |
| Large diameter barrier fluid ports for increased flow |
| Bi-directional barrier fluid ports operate on both clockwise and counterclockwise rotating equipment |
| Outboard bellows pressurized on the outside diameter for maximum safety and performance |
| Hydraulically-balanced bellows seal design |
| Rotary bellows for enhanced performance in slurry and particulate services |
| Corrosion-resistant Alloy C-276 bellows construction |
| Fits a wide range of pumps and other rotating equipment |
| Sizes | 25 mm to 60 mm (1.00" to 2.5") |
| Pressure | 711 mm (28") Hg Vacuum to 10 bar g (150 psig*) 10 bar g (150 psig) inboard differential* |
| Temperature | -55° C to 3000° C (-67° F to 570° F*) |
| Speed | 20 m/s (4000 fpm) |