762 by the Case.
Silkolene 762 Hi-TempJointing Compound
Designed for sealing joints to prevent leakage of high temperature air or other gases, like exhaust flanges or turbocharger connections
Can be used from 200°C to 800°C providing the joints are rigidly mounted and are free from distortion and movement
Well suited for 4-stroke exhaust systems and highly adhesive to all clean metal surfaces
Approved by the UK Ministry of Defense, Rolls Royce, Garret, Lucas Turbochargers, Mikuni Carburetors and is also GE Aviation certified
Available in 225 gram tubes x 6