These internal sealing methods can be used where a large number of adjacent joints are to be sealed. They are also very useful where there would be problems in digging up a joint every twelve feet.

In-Weg

In-Weg is a rubber seal that is installed over each pipe joint on man-entry pipes. Water, waste-water, sewer and gas pipes can be sealed with different types of rubber. Minimum pipe diameter is usually 20" (500mm) but short lengths of 16" (400mm) can also be sealed. The maximum size we have supplied to date is 144" (3660mm).

Mainspray

Mainspray is a method of internally sealing cast iron joints under live gas conditions by locating each pipe joint and spraying a special two-part anaerobic sealant into the joint packing.

Up to 400 ft. can be sealed from one tapping in the pipe. (200 ft. either way)

Mainspray is for low and medium pressure pipes from 4" through 48".

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