AIGI Environmental Inc.
AIGI 522S-N Wedge-Cut Spring-Energized Rotary Seal
The AIGI 522S-N is a single-split rotary seal in NBR that uses AIGI's patented reverse wedge-cutting and spring-energized sealing technology. It is designed as an economical way to reseal large, slow-turning equipment without taking the machine apart.
Product Benefits
- Patented reverse-wedge split: The patented reverse-wedge split closes tightly once installed, while spring energization keeps the sealing force live over time.
- Firm cavity grip: An OD live-loading design tightens the seal in its cavity bore, giving firm installation and more holding power than a plain split ring.
- Economical single split: A single split is less expensive than a double-split seal.
- Value for rough machines: That makes the 522S-N the value pick when equipment condition (poor concentricity, large runout) rules out an ordinary one-piece seal but budgets are tight.
Where It's Used
- Large, slow, imperfect machines: It is intended for large-diameter, low-speed equipment with poor concentricity and large runout.
- Heavy plant machinery: Typical hosts are big bearings, gearboxes, fans and similar heavy machinery.
- No major teardown: These are machines where dismantling for a seal change would be a major undertaking.
Good to Know
- Wider temperature and speed: This NBR variant carries the wider temperature window and higher speed capability of the pair.
- Gentler duties covered: The polyurethane 522S-PU covers gentler, slower duties on even larger bores.
- Check shaft runout: The split versions expect the shaft to run truer than the non-split 522 seals; the split construction buys installability, not extra runout tolerance.
