Sealing solutions based on silicone rubber are extensively used in shipping, rail transportation, the foodstuff industry and the construction industry.
Silicone is a perfect material choice for exacting conditions, due to its excellent ozone- and weather-resistant qualities. Its operating temperature range is extremely wide; in its basic composition, the range is from -50 °C to +200 °C; with added chemical compounds, it may be as wide as -100 °C to +300 °C. Silicone rubber is also highly resistant to aliphatic oils, and it is an excellent electrical insulator.
Its disadvantage is that its mechanical strength and wear resistance are somewhat poorer than those of other rubber types. However, its material qualities may be modified by preparing special mixtures. Such mixtures may exhibit, for example, a higher tear strength, improved steam and thermal resistance, and a better fire behaviour.
By using the correct mixture of materials, and by subjecting products to post-curing in accordance with the requirements set for them, silicone can be used in the foodstuff industry in applications that meet the requirements set for FDA Approved solutions.
We prepare our silicone mixtures in our own mixing plant. This enables solutions tailored to client needs, starting from small batches and focusing on silicone’s varying qualities. Silicone can be tinted in accordance with the RAL colour chart. A fully colourless silicone type is also available. We employ the hardness scale from 20 ShA to 90 ShA.
Our selection includes silicone seal solutions reinforced with metal and tailored to client needs. Such solutions are made of a mixture that best matches the client’s end product. A metal reinforcement lends rigidity to the seal, enabling its installation without a separate attachment solution.
Sectoral flammability requirements are being constantly tightened. We have long been manufacturing self-extinguishing silicone mixtures as well as seals based on such mixtures, previously known by the general name of LTC silicone.
The special mixtures that we have developed enable the manufacture of fire classified door and window structures for the rail transportation and shipping industries, for example.
With requirements becoming ever more stringent, we have developed and tested special mixtures which meet the sectoral fire standards as follows:
NF F 16-101: Classification: I2, F1
DIN 5510 Part 2:2003-09: Combustibility class, S4, Smoke development class, SR 2, Dripping class, ST2
BS 6853:1999; Vehicle cat 1b (table 7), Vehicle cat 1a (table 8)
EN 45545-2: 2013, R22, R23; HL1 - HL3
NFPA 130: (ASTM E 162, ASTM E 1354, informative only; ASTM E 662, BOEING BSS 7239, ASTM C 1166, passed)
IMO FTPC Part 2, Part 5
UL 94 Vertical burning test; 94V-0