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Are available in different diameters and lengths and are composed of mica (muscovite or phlogopite) (90%) impregnated with silicone resin (10%) and, on request, can be painted on the outside to make them water repellent.

Our continuous research towards improvement has led us to invest in innovative machines for cutting tubes which allow us to obtain precision bushings that represent our flagship product.

The product is certified according to UNI EN 45545-2:2015; AFNOR NF F 16101-2; BS 6853:1999 - BS 476 Part 6 1989+1:2009; BS 476 Part 7:1997.