SONDERHOFF FERMASIL - SIL Foam Gasket

Product catalog summary

Introduction
SONDERHOFF FERMASIL is a two-component silicone system designed for creating soft elastic silicone elastomers and foam sealings using FIP(F)G technology. It consists of an A-component and a cross-linking B-component mixed in a specific ratio to form a sealing or elastomer at room temperature.

Application Methods

2D Application on Flat Surfaces: Uses thixotropic sealing systems forming a seal body with a height/width ratio of 1:3.0 to 1:1.5.
2D Application in Grooves: Utilizes liquid sealing systems for seamless foam seals.
3D Application on Flat Surfaces: Similar to 2D, suitable for extreme slopes and vertical applications.
3D Application in Grooves: Thixotropic systems are preferred, applicable on extreme slopes and vertical surfaces.

Processing and Properties
SONDERHOFF FERMASIL is processed using low-pressure mixing and dosing machines. It is suitable for temperatures from -60°C to +180°C, with short-term resistance up to +350°C. The material is water-resistant, chemically resistant, and suitable for tropical environments.

Key Features

Temperature resistance up to +180°C, special types up to +250°C, and temporary up to +350°C.
Maintains flexibility down to -60°C.
Closed-cell structure prevents water absorption.
High chemical resistance.
Hydrolysis stable for damp environments.
Tack-free in 2-60 minutes, with optional furnace use for faster curing.
Adaptable for various sealing applications.
Resistant to environmental effects.
Long-term durability with high resetting ability.
Some formulations are food contact safe.

Technical Specifications

Appearance: Available in white, grey, black, and other colors.
Viscosity: Ranges from 5,000 to 250,000 mPas.
Hardness: Foam: 25 Shore 00 to 40 Shore A; Potting: Gel-like to 80 Shore A.
Temperature Resistance: -60°C to +180°C, temporary up to +350°C.
Flame Retardancy: Up to UL 94 V-0 possible.

Applications
SONDERHOFF FERMASIL is used in automotive, packaging, white goods, electrical engineering, electronics, and lighting industries. Specific applications include drive belt covers, packaging covers, ceramic stovetops, switch cabinet doors, circuit boards, and moisture-proof luminaires.

Conclusion
SONDERHOFF FERMASIL offers a versatile and robust solution for sealing and potting applications across various industries, with customizable formulations to meet specific requirements.

Catalog excerpts

SONDERHOFF FERMASIL Two-component, room temperature cross-linking silicone systems for sealing and potting

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The tailor-made chemistry for growing requirements. SONDERHOFF FERMASIL is the two-component silicone system for the manufacturing of soft elastic silicone elastomers and silicone foam sealings, which are applied directly onto the part by using FIP(F)G (Formed-In-Place (Foam) Gasket) technology. SONDERHOFF FERMASIL is processed using low pressure mixing and dosing machines for two components. Suited for silicone sealants are dynamic or static mixing systems. Henkel recommends dynamic mixing systems for increased ease of material processing. The systems consist of an A-component and a cross-linking...

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SONDERHOFF FERMASIL Two-component, room temperature cross-linking silicone systems 10 good reasons for SONDERHOFF FERMASIL: 1. … can be used at a constant temperature up to +180 °C, for special types up to +250 °C and temporary up to +350 °C. 2. … keeps the greatest possible flexibility even down to -60 °C. 3. … is closed-cell and therefore nearly do not absorb water. 4. … is highly resistant to many chemicals. 5. … is hydrolysis stable and therefore suitable for use in tropical or damp environments. 6. … is tack-free in 2 – 60 minutes, depending on the thermal conditions. A furnace can significantly...

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SONDERHOFF FERMASIL The technology SONDERHOFF FERMASIL – The components SONDERHOFF FERMASIL – The reaction process SONDERHOFF FERMASIL sealing foams consist of a liquid to pasty A-component and a cross-linking B-component. The chemical reaction of SONDERHOFF FERMASIL sealing foams is initiated by mixing the A- and B-components. The applied compound foams up to a uniform gasket under room temperature conditions. Foaming-up time Tack-free time Assembly time SONDERHOFF FERMASIL – The foaming process > Pot life: The time span from the mixing of the A- and B-components to the beginning of the foaming...

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SONDERHOFF FERMASIL Two-component, addition-curing silicone system for sealing, bonding and potting PROCESSING INFORMATION > SONDERHOFF FERMASIL systems are processed with mixing and dosing equipment for two components. The recommended processing temperature is +23 °C ±5 °C. PHYSICAL AND CHEMICAL PROPERTIES Property SONDERHOFF FERMASIL White, grey or black, other colors upon request (also transparent) 5,000 to 250,000 mPas (highly pasty) Foam: 25 Shore 00 up to 40 Shore A, potting: gel-like up to 80 Shore A Compression load deflection Foam: from 0.2 to 0.7 g/cm³, potting: from 1.0 to 2.0 g/cm³...

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Get in contact with us Henkel AG & Co. KGaA Henkelstraße 67 40589 Düsseldorf Germany Tel.: +49 211 797-0 Fax: +49 211 798 4008 www.henkel.com www.henkel-adhesives.com www.sonderhoff.com The description of the possible fields of use of our products as well as the technical data and values only have a general character and do not mean that a certain product can be used under all conditions in the respective field of use. In this respect, the stated field of use is not a binding specification or usage provision. Due to the great number of environment variables and their influences (e.g. temperature,...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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