A Saddle Washer is used for fastening of roof coverings in conjunction with either screws or bolts. It is used as a crown fixing and is therefore placed on top of the corrugations or ribs. The Saddle Washer has the shape that fits the profile of the roof covering. 
The Saddle Washers consist of backing material which usually is steel or aluminum, and facing material which has to be very elastic and has good sealing capabilities.

Standard Saddle Washer:
The Saddle Washers on the market today are mostly made from the pre-painted steel or aluminium. The facing material is made of a low tensile strength polymer sponge. The current sponge material has poor memory characteristics which does not allow for the expansion and contraction of the panels used in metal building constructions.

Aztec innovated Saddle Washers:
Saddle Washers produced by Aztec is made of an aluminum sheet with a thickness of 1.0 mm or more. Facing material is a nitrogen expanded low durometer EPDM elastomer called "Polymer 36”. Backing material – Aluminium and facing material – "Polymer 36” are bonded together prior to forming of saddle washer. "Polymer 36”, in addition to its other excellent properties, it has a good temperature resistance. This allows the powder coating of saddle washer in any RAL, NCS or other special colors. 
Technology of saddle washers powder coating as well as the machines used are specially developed by Aztec.