Why Pipeline Flange Isolation Matters
Galvanic corrosion occurs rapidly whenever two dissimilar metals are electrically connected in an electrolyte such as moist soil or seawater. Flange Isolation Kits (FIKs) break this electrical circuit, dividing long pipelines into discrete cathodic protection zones.
Key Elements of a Reliable Isolation Kit
- High dielectric strength retainer gasket (Glass Reinforced Epoxy NEMA G10/G11).
- Spring-energized PTFE or Viton primary seal for dual containment.
- Mylar or Nomex bolt insulating sleeves.
- Double steel-backed G10 insulating washers per bolt.
