Silikonprofile

Silikonprofile are extruded silicone rubber profiles used for sealing, insulating and protecting components in buildings, vehicles, electronics and consumer appliances. They are manufactured from silicone elastomer and cured by either addition (platinum) or condensation (tin or acetoxy/neutral) cure chemistries. The curing method affects odor, cure speed and compatibility with substrates.

Manufacturing involves extruding the profile through a die to create a continuous cross-section, followed by heat curing to finalize the elastomer. Profiles are available in standard cross-sections such as bulb, D, U and T, as well as custom geometries to fit specific grooves or gaps.

Properties of Silikonprofile include a broad service temperature range, typically from about -60°C to +230°C, with some high-temperature grades extending higher. They exhibit excellent weathering, UV and ozone resistance, good electrical insulation, high elasticity, low compression set, and resistance to many chemicals. They remain flexible in cold conditions and are generally stable in humid environments.

Applications cover window and door seals, glazing gaskets, refrigerator and appliance seals, automotive weatherstrips, sanitary seals, electronics potting sleeves and cable end seals. Formulations can be tailored for medical or food-grade requirements when needed.

Environment and installation: silicone profiles are generally inert but acetoxy-cure formulations can release acetic acid odor during cure. Installation is typically by compression in a groove or with compatible sealants, and may include mechanical retention or bonding.

See also: silicone rubber, gasket, extrusion.