It sounds like a bedding compound. Probably a polysulfide (3m 101) or Dolfinite. Can you take a picture of the "cast" material? Can you take a picture of the area involved so we can see the parts? What colour is the material?
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
1978 30' Hughes Northstar 1000
1964 20' Bertram Moppie