The latest development in terms of resistance to alkali aggression of the aluminium anodic oxide layer has been awaited since long by many industries, such as automotive, electronics, medical, aerospace.
There are in fact several requests to provide the anodic oxide with a high resistance to alkalis in order to use anodized aluminium in fields in which the use of the same would not have been possible until today.

The new requirements concern the resistance to alkaline environments of the anodic oxide, to be obtained with an ecological and user-friendly product. Although the anodic oxide is quite resistant when exposed to atmospheric agents and in acid environments it does, however, suffer from quite evident problems when in an alkaline environment.

Examples of resistance to alkaline detergents: the car wash in the automotive field or the dishwasher in the food industry or again, windows/doors in the architectural field.
Resistance to particular oil in the mechanical field. Resistance to sweat and fingerprints in the field of internal design.

A new sealing product has been developed to meet these types of requirements. Based on the tests that have been carried out this product meets the requirements according to international standards in full, especially, those of the major automotive industries; very careful to ensure a good resistance of their products in anodized aluminium.
As a result from these experiences, a complete family of products is now available, so to respond to the different demands.

Result of the test of alkaline resistance GMW14665 at pH 13.5
Comparison between a piece sealed with conventional sealing (left)
and one sealed with Superseal (right)

Test di Resistenza agli Alcali

Result of the test of alkaline resistance TL 182 at pH 1 + pH 13.5