joint runner

noun

1. (in plumbing) incombustible materials for packing a joint to be caulked with lead.

Example Sentences

Rickie Fowler, fifth at the Masters and joint runner up at both Pinehurst and Hoylake, has been the most consistent major performer this year.

From BBC

Then a joint runner, which is an asbestos rope about 2 feet long and about 1 inch in diameter, is fitted around the pipe and forced against the hub where it is clamped by means of an attached clamp.

From Project Gutenberg