

Gaskets for replacing heat-resistant glass in the fireplace door are made of glass yarn, in crochet technique on round braiding cylinders or on a flat knitting machine. The tapes are characterized by a soft, elastic weave. The products are available in an impregnated (dyed) version.
The abbreviations SF and SR inform us about how the gasket with the tape was made. The abbreviation SR means that the product was made in crochet technique on round braiding cylinders. The abbreviation SF, on the other hand, tells us that the tape was made in crochet technique on a flat knitting machine.
The SF tape is flattened and the SR version is slightly rounded. Technically, both have the same properties. When choosing a gasket for the fireplace door, you need to make sure that you choose the right thickness and width. The method of execution and shape of the tape can affect the choice only for the contractor who is accustomed to working with a specific type of sealing tapes.