Editorial Technical Reference

High-Temperature Silicone Rubber Compound

This page explains how High-Temperature Silicone Rubber Compound is classified within Manufacture of Domestic Appliances. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

This high-temperature silicone rubber compound is a specialized elastomer formulation designed for use in the manufacture of domestic appliances.

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Product Specifications

Technical details and manufacturing context for High-Temperature Silicone Rubber Compound

Definition
This high-temperature silicone rubber compound is a specialized elastomer formulation designed for use in the manufacture of domestic appliances. It provides reliable sealing and electrical insulation in applications where components are exposed to heat from motors, heating elements, and compressors. The material maintains its mechanical properties and sealing integrity across a wide temperature range, ensuring long-term performance in demanding environments.

The compound is based on a cross-linked polydimethylsiloxane polymer network, reinforced with fumed silica filler and stabilized with heat-resistant additives. This composition delivers a balance of flexibility, strength, and thermal stability. It resists degradation from oils, chemicals, and moisture, making it suitable for gaskets, seals, and insulating components in appliances such as ovens, washing machines, and refrigerators.

Key technical parameters, as listed in the directory, include an operating temperature range of -60 to 200 °C, hardness of 40–80 Shore A, tensile strength of 6–12 MPa, elongation at break of 150–500%, compression set of 10–30%, dielectric strength of 15–25 kV/mm, and volume resistivity of 10^13–10^15 Ω·cm. The material also exhibits a flame rating of V-0 (UL 94), water absorption of 0.1–0.5%, and a service life of 10–20 years under normal operating conditions. Density ranges from 1.1 to 1.4 g/cm³, and tear strength from 10 to 30 kN/m.

The compound is suitable for processing by injection molding, extrusion, or compression molding. Its consistent processing characteristics facilitate efficient production of complex shapes. However, the listed values are reference ranges and must be verified for the specific grade and application. Always confirm model-specific data and compliance with relevant standards (e.g., ISO, IEC, UL) with the legal manufacturer or supplier before procurement.
Working Principle
The material's working principle relies on a cross-linked silicone polymer network. The backbone consists of alternating silicon and oxygen atoms (Si-O bonds), which are inherently stable at high temperatures. Cross-linking agents create a three-dimensional network that provides elastic deformation, allowing the material to return to its original shape after compression or stretching. Fumed silica filler reinforces the network, improving mechanical strength and tear resistance. Heat stabilizer additives further enhance thermal stability by preventing oxidative degradation. This combination ensures that the compound maintains its sealing and insulating properties over a wide temperature range, from -60°C to 200°C, without significant loss of performance.
Common Materials
Polydimethylsiloxane polymer, Fumed silica filler, Heat stabilizer additives, Cross-linking agents
Technical Parameters
ParameterTypical rangeNotes & selection driver
Operating Temperature RangeRequired-60–200 °CContinuous service temperature without degradation
HardnessRequired40–80 Shore ADurometer measurement of material stiffnessISO 7619-1
Tensile StrengthRequired6–12 MPaMaximum stress material withstands before breakingISO 37
Elongation at BreakRequired150–500 %Percentage stretch before material failureISO 37
Compression Set10–30 %Permanent deformation after compressionISO 815
Dielectric Strength15–25 kV/mmElectrical insulation capabilityIEC 60243-1
Density1.1–1.4 g/cm³Affects weight and costISO 1183-1
Tear Strength10–30 kN/mResistance to tearing during installationISO 34-1
Volume Resistivity10^13–10^15 Ω·cmHigh insulation performanceIEC 60093
Flame RatingV-0 UL 94Self-extinguishing within 10 secondsUL 94
Water Absorption0.1–0.5 %Low absorption for humid environmentsISO 62
Service Life10–20 yearsUnder normal operating conditions

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Silicone Polymer Base Part
    Primary elastomeric matrix providing flexibility and thermal stability
    Material: Polydimethylsiloxane
  • Reinforcing Filler Part
    Enhances mechanical strength and tear resistance
    Material: Fumed silica
  • Heat Stabilizer Package Part
    Prevents thermal degradation at elevated temperatures
    Material: Ceramic microspheres or proprietary additives
  • Cross-linking System Part
    Enables curing and network formation
    Material: Peroxide or platinum catalyst system
  • Processing Aids Optional Part
    Improves mold release and flow characteristics
    Material: Internal release agents

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for High-Temperature Silicone Rubber Compound.

high-temp silicone elastomer heat-resistant silicone rubber appliance-grade silicone compound thermal silicone material

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar (145 psi) static, 5 bar (72.5 psi) dynamic
other spec: Flow rate: Not applicable (solid elastomer), Slurry concentration: Not applicable
temperature: -60°C to +250°C continuous, up to 300°C intermittent
Media Compatibility
✓ Hot air/steam environments ✓ Food-grade applications (FDA compliant grades) ✓ Electrical insulation systems
Unsuitable: Concentrated acids/bases or hydrocarbon solvents
Sizing Data Required
  • Sealing gap dimensions (width/depth)
  • Required compression set percentage
  • Specific thermal cycling profile

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal degradation
Cause: Exposure to temperatures exceeding the compound's maximum continuous use rating, leading to hardening, cracking, and loss of elasticity due to polymer chain scission and oxidation.
Compression set
Cause: Prolonged static compression or over-torquing in gasket applications, causing permanent deformation and loss of sealing ability as the material fails to rebound.
Maintenance Indicators
  • Visible surface cracking, hardening, or discoloration (e.g., darkening or whitish bloom)
  • Audible squealing or hissing from seals/gaskets indicating compression loss or leakage
Engineering Tips
  • Ensure proper temperature derating; install away from localized hot spots and use thermal barriers if near exceedance zones.
  • Apply controlled, even compression per manufacturer specs; use anti-stick coatings on flanges to prevent adhesion-induced stress.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASTM D2000 - Standard Classification System for Rubber Products in Automotive Applications ISO 3302-1 - Rubber - Tolerances for products - Part 1: Dimensional tolerances DIN 7715 - Rubber materials; silicone rubber; requirements and testing

Quoted from the published standard.

Manufacturing Precision
  • Thickness: +/-0.25mm
  • Hardness: +/-5 Shore A
Quality Inspection
  • Thermogravimetric Analysis (TGA) for thermal stability
  • Tensile Strength and Elongation Test per ASTM D412

Manufacturers of High-Temperature Silicone Rubber Compound

Manufacturer profiles associated with High-Temperature Silicone Rubber Compound.

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Frequently Asked Questions

What is the operating temperature range of this silicone rubber compound?

The directory lists a continuous service temperature range of -60 to 200 °C. However, the exact range may vary depending on the specific grade and application. Always verify with the manufacturer or supplier.

What standards are referenced for the material's properties?

The listed parameters reference standards such as ISO 7619-1 for hardness, ISO 37 for tensile strength and elongation, ISO 815 for compression set, IEC 60243-1 for dielectric strength, and UL 94 for flame rating. These standards are for verification purposes and do not imply certification of a specific product.

Can this compound be used for electrical insulation in appliances?

Yes, the material has a dielectric strength of 15–25 kV/mm and volume resistivity of 10^13–10^15 Ω·cm, indicating good insulating properties. However, suitability for a specific application must be confirmed with the supplier.

What processing methods are suitable for this material?

The compound is designed for injection molding, extrusion, or compression molding. Its consistent processing characteristics facilitate production, but optimal parameters depend on the specific formulation and equipment.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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