The flange is sealed by injection-moulding a secondary joint around the failed primary gasket, enclosing the flange's outside diameter and forming a mechanical seal.
Methods used
- Containment ring (clamp) — insertion and peripheral
- Insert wire
- Wire wrap
- Drill & tap
Wire wrap
No caulking or drilling of the flange faces is required. A fitted wire retains the injected compound until the gap is fully sealed.
Stud and nut condition is assessed before starting. For high-pressure, high-severity leaks a full line-to-line enclosure is preferred. Re-injections are normally limited to four.
