1. Rotating-seal interface rather than stationary
Instead of having a stationary seal lip/pad that rubs against a rotating shaft (which can cause wear and damage on the shaft), CinchSeal’s design has the elastomer boot and rotor cups rotate with the shaft, while stator plates remain stationary.
This is very beneficial in bulk handling equipment e.g. conveyor systems and in processing equipment e.g. mixers/blenders where shaft run-out, vibration or misalignment is more likely.
2. Self-adjusting and accommodates misalignment/run-out
CINCHSEAL’s seals are described as “self-adjusting”. Thanks to the elastomer design and floating rotor cup assembly. Because the cups are mounted to the boot, the rotating assembly floats with the shaft accepting up to ¼ in (6.35mm). This makes them more tolerant of real-world installation deviations compared to very tight mechanical seals.
3. Air-purged (or Nitrogen, or Grease) option to create barrier pressure
Many CINCHSEAL models utilize a light purge of air* (or nitrogen or silicone grease if air isn’t available) to maintain a slight positive pressure inside the seal cavity, thereby reducing the chance of product/contaminant ingress or egress. *Air purged at 5-7 psi (0.5 bar) above pressure in the vessel.
4. Designed for bulk solid, abrasive, sanitary & harsh environments
The product lines cover specifically tough applications such as screw conveyors, bucket elevators, blenders, mixers handling powders, slurries, bulk solids.
Some models (e.g. 9700 series) are built in stainless steel and meet USDA standards and FDA approved for food contact, suitable for food, pharma, cosmetic and personal care applications.
The materials for rotor cups/stators are chosen for wear resistance – mineral-filled PTFE, hard-coat anodized aluminum for more abrasive services.
5. Ease of repair/Rebuild kit capability
Most models are designed such that worn components (stators, rotor cups, elastomer boots) can be replaced via rebuild kits rather than full replacement of the seal housing.
Split designs (especially for sanitary/food applications) allow installation or maintenance without dismantling major equipment. Example: The 9700 series is split; internal parts can be replaced without unbolting the whole housing.
6. Better sealing, reduced leakage/product loss/contamination
By improving the interface area (larger seal face) and using the rotating design plus purge pressure, leakage is significantly reduced compared to older style lip-seals, packing, rope seals.
7. Reduced maintenance, reduced downtime
Because shaft damage is less likely, misalignment is tolerated, and seal design is robust, maintenance intervals are improved.
Stops material loss, significantly reduce the need for maintenance.
Protect bearings and gearboxes.
Reduced downtime means increased productivity and improved ROI.
For more information, contact email: seksans@cinchseal.com | Tel. +66 895362485