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Fax: +49 (0) 8571-9229722


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is an expanding, global company in Lower Bavaria, right at the Austrian border. We deal with braiding and insulating sleeves for thermal and electrical insulation as well as for the areas of plastics reinforcement and lightweight for over half a century.
When German SMEs we are regionally connected and on the go on the international stage. In SILTEX values are still alive, but does not insist on old. On the contrary: We are open to new things and have fun with creative ideas. Thanks to this curiosity, combined with technical excellence and high flexibility, we include in each of our business to the technological leaders.

The direct line to

siltex logo-farbe

Flecht- und Isoliertechnologie
Holzmüller GmbH & Co.KG
Palmstr. 27
D-84387 Julbach
Tel: +49-8571-922 970
Fax: +49-8571-922 9722




Siltex supplies braided fabrics and insulating sleeves for the automotive industry.


Energy Industry

For years we have been a reliable partner of the energy industry with our insulation materials.


Aviation Industry

Whoever wants to go high. They trusts in the quality and reliability of our products.


Rail Industry

Our products are a good choice on land, sea and rail.



The restoration of mobility with the materials of the future. An important topic...



Everyone is talking about electric mobility, we have developed products for lighter,...

Materials and Products


Aramid belongs to the latest group of chemical fibres. Its special capabilities are a highstrength, a high E-modulus, a low density as well as a good acceptance to work. That’s why Aramid is excellent to use in different fields of industry, as already used in fibre compound materials of high demanded parts of aviation and astronautics, for vehicle-,electric- and sport article-industry, and last but not least for ballistic protection.

Aramid Sleeve

Aramid sleevings are suitable for the production of.....

Aramid Tape

Aramid tapes can be used as edge protection, connecting pieces....

Aramid Cord

Aramid cords are used as holding lines for brake parachutes....


Carbon fibres (also called carbon fibres or carbon) are industrially produced fibres from carbon-containing raw materials which are converted into graphite-like carbon by pyrolysis. A carbon fiber has a diameter of about 5-8 micrometers. Usually 1,000 to 50,000 individual fibres (filaments) are combined to form a roving, which is wound on spools.

Carbon Sleeve

Carbon sleeves are suitable for the production of...

Carbon Tape

Carbon tapes cover more working areas than woven....

Carbon Cord

The tensile strength of carbon fibres is approx. four times higher than that of...

Glass Fiber

E-glass fiber is the most common reinforcing material for fiber composites; glass fibers are inexpensive and have excellent mechanical, thermal, dielectric and chemical properties. The strength properties are similar to those of metals (e.g. aluminium alloys), although the specific weight is lower than that of metals. Glass fibers are non-combustible, temperature-resistant up to approx. 700 °C and resistant to most chemicals and weather influences.

Glass Fiber Sleeve

Glass fiber sleeves are suitable for the production of profiles

Glass Fiber Tape

Glass fiber tapes are suitable for the production of profiles

Glass Fiber Cord

Glass fiber cords are used as corner reinforcement in ....

High Temperatur Glass Fiber

Quartz-based glass is mainly used for high-temperature applications up to 1200 °C.
There are two variants:
1. a smooth yarn, which has no visual difference to standard E-glass.
2. a textured yarn, which is a wool-like yarn. It is suitable for high and rapid temperature fluctuations.

High Temperatur Glass Fiber Sleeve

Glass fiber sleeves are suitable for the production of profiles

High Temperatur Glass Fiber Tape

Glass fiber tapes are suitable for the production of profiles

High Temperatur Glass Fiber Cord

Glass fiber cords are used as corner reinforcement in ....

Basalt and other natural fibres

Basalt is a dark grey to black, dense, medium-grained, volcanic rock. The basalt fibre is a 100% inorganic, mineral, continuous filament, which was only released for civil use in 1995. The size of the diameter of 11.0 µm guarantees the best compromise between stability, durability and cost. Furthermore, the fibre has a natural gold-brown colour, which can be used for decorative purposes.

Basalt Sleeve

Basalt sleeves are suitable for the production of profiles

Basalt Tape

The advantage of basalt tapes compared to....

Basalt Cord

Basalt has a 5% higher density compared to E-glass, 15% higher....


Cotton is one of the natural fibres. This natural material is characterised by its high elasticity and low density. Cotton is widely used in the textile industry and as a fibre composite material.

Coton Sleeve

Cotton sleeves are suitable for the production of profiles of any kind, as spars or other hollow constructions, ….

Cotton Tape

The advantage of cotton braided tapes compared to a woven material is the coverage of a larger width range.

Cotton Cord

As a natural wicker product that is 100% recyclable, cotton cords are widely used, for example as hangers in historical looms.


Flax (also called linen) is a natural fibre. This natural material is characterised by a high tensile strength comparable to glass fibre and a low density. Flax is used as a fibre composite material in the automotive and sporting goods industries.

Flax Sleeve

Flax sleeves are suitable for the production of profiles of any kind, 

Flax Tape

The advantage of flax braided tapes compared to a woven material is the coverage of a larger width range.

Flax Cord

As a natural braided product that is 100% recyclable, flax cords are widely used.

Polyester and other synthetic fibres

The polyester fibres are available in many different colours, from bright colours to gold and silver. Polyester has a temperature resistance of about 180°C. 

Polyester Sleeve

The polyester sleeve is used as edge protection....

Polyester Tape

Polyester tapes are used as strapping tapes...

Polyester Cord

Polyester cords are used in clothing...


Hybride is defined as „something bundled, crossed, or mixed“. In braiding technology terms we speak here of sleeves or tapes, produced from no less than 2 different materials, i.e. carbon and aramid. Materials ratio can vary depending on the equipment used. Hybrides‘ ratio can be as much as 10:90.

Perlon Sleeve
Polyamid 6

PET Sleeve

Nylon Sleeve
Polyamid 6.6

The monofilament fibres from which the sleeves are made are characterized by their high stiffness and hardness. These sleeves therefore have a wide range of applications.

Perlon Sleeve

The Perlon sleeve is widely used as a cable protection sleeve. 

PET Sleeve

PET sleeve is used as edge protection. It serves as a cover 

Nylon Sleeve

The nylon sleeve is widely used as a cable protection sleeve. The monofilament

Electrical Insulating Sleeves

An insulating sleeve is intended to protect, protect against electrical voltage / current, such as heat, cold, radiation, friction, chemicals, salt water, acids, alkalis, high voltage. Sometimes several factors come together such as protection against alkalis and acids and high temperatures.

Fiberglass Sleeves

Fiberglass sleeves for insulation with various coatings and silicones or thermically rounded.

GU Fiberglass Silicon impregnated

Fiberglass Sleeve Silicone impregnated

GSE Fiberglass Silicon Coated

Fiberglass Sleeve Silicone Coated

GI Glassfiber Sleeve Silicon Impregnated

Fiberglass Sleeve Silicone Impregnated

SV13 Fiberglass Thermically Rounded PU Impregnated

Fiberglass Sleeve Thermically Rounded Poleurethan Impregnated

SV51 Fiberglass Sleeve Thermically Rounded

Fiberglass Sleeve Thermically Rounded

Roving Seal Cord

Seal Cord

PVC Sleeves

PVC sleeve manufactured according to DIN 40621, with heat class A (up to +105°C).

PVC Sleeve

PVC Sleeve Without Fabric DIN40621

Silicon Insulation Sleeves

Production is based on EN 60684-3-121 to 124. The tubes correspond to thermal class "C" (-60°C to +220°C).

Silicone Rubber Sleeve

Silicone Rubber Sleeve Without Fabric
EN60684-3-121 to -124.