How to Choose Hollow Aluminum Spacer Bars (Appearance, Wall Thickness, Accessories)

Hollow aluminum spacer selection criteria:

Firstly, inspect the appearance. The surface should have good luster and no visible oil stains. Excessive oil stains can hinder the application of butyl rubber, thereby affecting the quality and production of insulating glass, significantly reducing its airtightness and shortening its lifespan. Generally, excessive oil stains are discovered during the trimming of spacers, and it is necessary to wipe them away with alcohol until completely clean, or white wine can also be used.

NextThe thickness of the spacers, or what we refer to as the wall thickness, is crucial to consider. Generally, the wall thickness of aluminum spacers is measured in decimals, making it difficult for non-experts to accurately determine the actual thickness of the aluminum strips they choose. This leaves room for some manufacturers to take advantage by making the thin ones thinner and the thick ones thicker. Since thin spacers are priced by the piece while thick ones are by weight per kilogram, a simple way to avoid this is to weigh the strips after removing the packaging. Each size of hollow aluminum spacer, with its respective wall thickness, has a standard weight per kilogram, with minimal variation in the upper and lower limits.

Thirdly, regarding the accessories used for hollow aluminum spacers, such as the selection of molecular sieve (drying agent). A simple test method is to place some molecular sieve in your palm, sprinkle a little water on it, and feel the temperature of the molecular sieve. The faster and higher the temperature rises, the better it is.——This molecular sieve has proven to be quite effective in moisture adsorption.