Not sure I can find this in South Africa. I used an exhaust sealer previously [that's the white] compound visible on the photo] but that only lasted about a season before turning powedery and brittle. I'll see if I can find the Permatex specification and see if a similar product is available locally.Use
Permatex 80335 Muffler and Tailpipe Sealer, 3 oz.
for $5.65 on Amazon