Introduction
China has a well-developed silicone and specialty lubricant supply chain serving automotive, electrical, electronics and industrial applications. Dielectric grease is commonly used to protect electrical connections from moisture and corrosion while providing lubrication and sealing.
This guide introduces six manufacturers and suppliers with relevant dielectric grease, silicone grease or electrical insulating silicone products available in the Chinese market.
Quick Comparison Table
| Rank | Company | Origin / China Presence | Relevant Products | Best For |
|---|---|---|---|---|
| 1 | Morelic | China | Dielectric Grease, Silicone Grease | OEM & Private Label |
| 2 | Bluestar Silicones | China / Global operations | Silicone Grease, Silicone Paste | Electrical & Industrial Applications |
| 3 | WACKER | Germany / China operations | Silicone Grease, Silicone Fluids | Electrical & Industrial Applications |
| 4 | Shenzhen AILUBE | China | Specialty Grease, Synthetic Grease | Electrical & Industrial Applications |
| 5 | Shin-Etsu Silicone | Japan / China operations | Silicone Grease, Silicone Oil Compounds | Electrical Insulation & Sealing |
What Is Dielectric Grease?
Dielectric grease is a non-conductive grease or compound designed primarily for electrical insulation, moisture protection, sealing and corrosion prevention.
Many dielectric greases are silicone-based because silicone fluids provide good electrical properties, water resistance and stability across a broad temperature range.
However, dielectric grease should not automatically be considered identical to every silicone grease. Some silicone greases are designed mainly for mechanical lubrication, while silicone compounds formulated for electrical applications focus more strongly on insulation, moisture resistance and sealing.
Shin-Etsu, for example, distinguishes between silicone greases primarily used for lubrication and silicone oil compounds designed for applications such as electrical insulation, sealing and water repellency.
Major Dielectric Grease Manufacturers & Suppliers in China
1. Morelic
Morelic is a China-based manufacturer specializing in dielectric grease, silicone grease and other specialty lubricants. Its dielectric grease is suitable for electrical connectors, terminals, spark plug boots and other applications requiring moisture protection and electrical insulation. Morelic also supports OEM/ODM, private-label packaging and customized small pack sizes for distributors and industrial brands.
- Country: China
- Website: https://morelic.com/
- Relevant products: Dielectric Grease, Silicone Grease
- Suitable for: OEM, private label and electrical applications
2. Bluestar Silicones
Bluestar Silicones(separation from Elkem) is a major silicone materials supplier with significant manufacturing operations in China. Its portfolio includes silicone greases, pastes and other specialty silicone materials used in electrical, sealing and industrial applications.
- Country / Presence: China / Global operations
- Website: https://www.elkem.com/
- Relevant products: Silicone Grease, Silicone Paste
- Suitable for: Electrical, sealing and industrial applications
3. WACKER
WACKER is a global silicone manufacturer with established operations in China. Its portfolio includes silicone greases and fluids used in electrical, cable and industrial applications requiring insulation, sealing and moisture resistance.
- Origin: Germany
- Website: https://www.wacker.com/
- China presence: Wacker Chemicals (China) Co., Ltd.
- Relevant products: Silicone Grease, Silicone Fluids
- Suitable for: Electrical and industrial applications
4. Shenzhen AILUBE
Shenzhen AILUBE is a Chinese manufacturer of specialty lubricating greases and industrial lubricants. Its product range includes synthetic greases and application-specific lubricants for electrical components, precision equipment and industrial machinery.
- Country: China
- Website: http://www.ailube.com/
- Relevant products: Specialty Grease, Synthetic Grease
- Suitable for: Electrical and industrial applications
5. Shin-Etsu Silicone
Shin-Etsu Silicone supplies silicone greases and oil compounds for lubrication, sealing and electrical insulation. Its products are used in electrical equipment and applications requiring moisture resistance and reliable insulation.
- Origin: Japan
- Website: https://www.shinetsusilicone-global.com/
- China presence: China operations
- Relevant products: Silicone Grease, Silicone Oil Compounds
- Suitable for: Electrical insulation and sealing
What to Look for in a Dielectric Grease Supplier
When comparing dielectric grease suppliers, focus on the product’s technical fit, documentation and supply capability rather than price alone.
- Electrical Properties: Check dielectric strength, volume resistivity and suitability for electrical or electronic components.
- Moisture Resistance: Ensure the grease can help protect connectors, terminals and contacts from water and contamination.
- Material Compatibility: Confirm compatibility with plastics, rubber, silicone rubber and common sealing materials.
- Temperature Range: Make sure the operating range matches automotive, electrical or industrial working conditions.
- Technical Documentation: Request TDS, SDS, RoHS, REACH and other relevant compliance documents when required.
- OEM & Packaging: For private-label projects, compare MOQ, packaging options, custom labels and OEM/ODM capability.
How to Verify a Dielectric Grease Supplier
Before placing a bulk order, buyers should verify both the manufacturer and the specific product being offered.
- Check the official website and product documentation. Confirm that the company actually offers silicone grease, electrical insulating compounds or related products.
- Request TDS and SDS documents. Review electrical properties, temperature range, consistency and material compatibility.
- Test samples. Evaluate moisture resistance, electrical insulation and compatibility with the plastics or elastomers used in your application.
- Confirm production and traceability. For OEM projects, ask about batch numbers, CoA availability, MOQ, packaging and private-label capabilities.
Frequently Asked Questions
Is dielectric grease the same as silicone grease?
Not always.
Many dielectric greases are silicone-based, but silicone grease is a broader product category. Some silicone greases are designed mainly for mechanical lubrication, while dielectric compounds are specifically selected for electrical insulation, moisture protection and sealing.
What is dielectric grease used for?
Common applications include electrical connectors, battery terminals, spark plug boots, lighting connections, sensors, switches and other electrical assemblies exposed to moisture or contamination.
Can dielectric grease be used on electrical connectors?
Yes. Dielectric grease is commonly used around electrical connectors to help protect against water, moisture and corrosion.
Because the grease itself is electrically insulating, the metal contacts should make proper mechanical contact before or during connector assembly.
What should I check before buying dielectric grease in bulk?
Review the product’s electrical properties, temperature range, rubber and plastic compatibility, TDS/SDS documentation, available packaging and batch traceability.
For private-label projects, buyers should also confirm MOQ, label requirements, production lead time and OEM capabilities.
Conclusion
China offers a wide range of dielectric grease and silicone compound suppliers, from specialized lubricant manufacturers to international silicone producers with local operations.
When comparing suppliers, focus on electrical insulation, moisture resistance, material compatibility, documentation and packaging capabilities. For OEM or private-label projects, requesting samples and technical data before bulk purchasing is recommended.