RelcaSil™ building blocks for elastomer coatings and adhesives

RelcaSil™ building blocks for elastomer coatings and adhesives

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Coating properties for automotive application need to meet ever more stringent requirements in comfort, safety, aesthetic style and technical possibilities. Yet, responsible production and higher sustainability standards also play their part in market demand standards. Our extensive RelcaSil™ range of building blocks not only meets these requirements, but surpasses them, enabling car manufacturers to create exactly the elastomer coating products they require.


Resins, additives and properties designed for automotive performance

Selectively designing the resins, additives and functional properties for the coating of a unique material like EPDM requires years of experience, application expertise and products that meet or even exceed expectations. Our exceptionally versatile RelcaSil™ range of modular building blocks for coating solutions is responsibly produced and developed in close cooperation with partners and customers. It meets the most stringent requirements and supports the automotive market with innovative solutions that really make a difference. Quite unique is the RelcaSil™ hybrid, which combines solvent resistance and durability elements derived from conventional urethane coatings with the noise reducing performance of silicone coatings. The RelcaSil™ hybrid approach also offers a very cost-effective and versatile solution that is always in line with the latest market trends.


Key benefits of our RelcaSil™ coating solutions

RelcaSil™ does not contain any hazardous substances, yet delivers the inventive leading performance the automotive industry demands. Our latest additions within this range are 100% water-based, NMP-free, NEP-free and single component. Through the modular building blocks, RelcaSil™ offers the weatherstrip industry many key benefits, such as reducing the silicone transfer, improving marring resistance and the next generation of sustainable squeak and rattle prevention. RelcaSil™ answers market demands for luxurious haptics, low gloss and excellent noise performance while simultaneously reducing the environmental footprint.

Key Benefits


RelcaSil™ product overview

Coating Application System Color Gloss Solids (%) NMP-free NEP-free Price level Description
RelcaSil™ 023 Dynamic Water 1K Black 4 to 7 33(+/- 1) Value line Born of the same genetics as our well-known WT-91-023. The same soft touch and outstanding noise performance with lower silicone transfer and improved processing.
RelcaSil™ 100 Dynamic Water 1K Black 2 to 6 33(+/- 1) Value line A 1K coating, which provides good noise performance, chemical resistance and durability. Formulated for easy application and reduced silicone transfer.
RelcaSil™ 102 Dynamic Water 2K Black 2 to 6 33(+/- 1) Value line A 2K coating, which provides good noise performance, chemical resistance and durability. Formulated for easy application and reduced silicone transfer.
RelcaSil™ 200 Dynamic Water 1K Black 2 to 6 33(+/- 1) Standard Next generation DNA of the classic WT-91-023. Excellent noise performance, limited silicone transfer, improved mar resistance, reduced friction and a preferred lower gloss.
RelcaSil™ 300 Abrasion Resistance Water 2K Black 3 to 7 33(+/- 1) Standard A NMP/NEP-free glass run coating designed for superior glass chisel durability and excellent noise performance.Exhibits a low coefficient of friction, excellent ice release and reduced silicon transfer.
RelcaSil™ 310 Abrasion Resistance Water 1K Black 2 to 6 33(+/- 1) Standard This multi-purpose coating was developed for its abrasion resistance and low silicon-transfer properties. It is flexible enough for dynamic seal applications.
RelcaSil™ 400 Silicone based Dynamic Water 2K Black 2 to 6 33(+/- 1) Premium Unique silicone based coating with truly innovative chemistry that breaks new ground in premium soft touch noise suppression technology.
RelcaSil™ 519 Structured Dynamic Water 1K Black 2 to 6 33(+/- 1) Premium A fine structured version of our next generation RelcaSil™ 023. A creative blend of texture, durability and excellent noise characteristics.
RelcaSil™ 523 Structured Dynamic Water 1K Black 2 to 6 33(+/- 1) Premium A medium structured version of our next generation RelcaSil™ 023. A creative blend of texture, durability and excellent noise characteristics.
RelcaSil™ 524 Structured Dynamic Water 1K Black 2 to 6 33(+/- 1) Premium A large structured version of our next generation RelcaSil™ 023. A creative blend of texture, durability and excellent noise characteristics.


Traditional portfolio

Coating Application System Color Gloss Solids (%) NMP-free NEP-free Price level Description
WT-91-023 Dynamic Water 2K Black 3 to 7 33 (+/- 1) Standard Our best selling globally approved coating and used by all major OEMs. Offers soft touch and superior noise performance for all vehicle types.
WT-91-024-C Color/dynamic Water 1K Clear 3 to 7 37 (+/- 2)
Premium As colored substrates return to the market, this 1K coating is a premium solution for providing noise reduction, solvent resistance and a satin finish.
WT-55-070 Color/dynamic Water 2K Clear 3 to 7 33(+/- 2)

Standard A unique clear coating that offers higher abrasion than traditional dynamic coatings, excellent noise suppression and UV stability.
WT-21-388 Appearance Water 2K Black 2 to 6 35(+/- 1)
Standard An appearance coating for extreme UV exposure. Formulated for superior toughness to meet the demanding car wash abrasion and chemical resistance specification.
WT-21-491 Glass Run Water 2K Black 3 to 8 37(+/- 2)

Standard A glass run coating designed for superior glass chisel durability and excellent noise performance. Exhibits a low coefficient of friction and excellent ice release.
WT-91-024-RS Structured Dynamic Water 1K Black 2 to 6 35 (+/- 1,5) Premium The unique particulate formulation allow this rough textured coating to meet the sought after appearance, durability, and noise performance of industry demands.



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RelcaSil™ building blocks for elastomer coatings and adhesives
Mel Micham
Global Market Director Stahl Performance Coatings