Description of Process
Kembla Watertech’s AMEX-10 Seal is the leading trenchless system for internally and economically repairing joint leakage or infiltration in those cases where only the joints have failed or circumferential cracks are present.

The AMEX Seal comprises a circular flexible rubber seal with patented sealing lips that are compressed firmly against the inside diameter of the pipe by stainless steel retaining bands.  The stainless steel bands and high quality rubber manufactured to order, provide a permanent solution for pressure and gravity applications.

AMEX-10 Seals are used for man entry applications or as an end seal for non man entry pipelines.

Typical Applications
Amex Seals can be installed in steel, cast iron, ductile iron, reinforced concrete and other materials.  They are flexible and will accommodate pipe movement resulting from ground shifting, thermal expansions, contractions and vibrations and handles operating pressures in excess of 2MPa and head pressure in excess of 30M.

Installation
Once the pipe surface has been cleaned and prepared, the rubber seal is positioned over the joint area.  The steel retaining bands are then placed into the locating grooves on the surface of the seal.  A special hydraulic expanding device applies a radial load to the band, which pushes the patented-designed seal firmly against the inside diameter of the pipe.  Each seal is individually air tested after installation to ensure a bottle tight seal.

Available Sizes
Amex Seals can be installed in diameters ranging from 500mm to 6m, with access openings being in excess of 1,000 m apart.  Multi-part fabrication of the retaining bands enables existing access chambers to be utilised.

Materials
The AMEX-10 Seal is made from EDPM rubber and the stainless steel retaining bands can be supplied in various grades of stainless steel.