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Dow DOWSIL 56 is a high-performance silicone grease in the DOWSIL series, with polydimethylsiloxane and silica thickener as core components. Designed for electronic & electrical sealing, industrial equipment lubrication, food machinery protection and medical device sealing scenarios, it features wide temperature stability, efficient waterproof insulation and food contact compliance
Wide Temperature Stability - Stable performance from -40℃ to 200℃, suitable for extreme working conditions
Efficient Waterproof Sealing - IP68 moisture and corrosion resistance, isolating water vapor and medium erosion
Excellent Electrical Insulation - High volume resistivity, ensuring insulation safety of electronic components
Food-Grade Compliance - Meets FDA and NSF H1 certifications, suitable for incidental food contact scenarios
Electronic & Electrical Field - Waterproof sealing for connectors and wiring harnesses, lubrication and insulation for switch contacts
Industrial Equipment Field - Long-lasting lubrication for bearings and gears in humid/chemical environments, anti-aging for rubber and plastic parts
Food Machinery Field - Certified models for lubrication and sealing protection of food equipment
Medical Device Field - Sealing and lubrication for precision instruments, suitable for biocompatibility verification scenarios
| Brand | DOW |
| Chemical Composition | Polydimethylsiloxane (PDMS) + Silica Thickener |
| Appearance | Paste |
| NLGI Consistency Grade | Grade 2 |
| Penetration (25℃) | 265 - 295 (0.1 mm) |
| Operating Temperature Range | -40 ℃ ~ +200 ℃ |
| Volatiles (24 h / 200 ℃) | < 1.0 % |
| Dielectric Strength | > 15 kV/mm |
| Volume Resistivity | > 1 × 10¹⁵ Ω·cm |
| Waterproof Sealing Grade | IP68 |
Q1: What is the primary function of DOWSIL 56 Silicone Grease in industrial applications?
A: DOWSIL 56 Silicone Grease is a high-performance, non-melting silicone-based lubricant and sealing compound designed to provide long-term lubrication, water resistance, and protection against corrosion for rubber, plastic, and metal components—especially in static sealing and low-speed mechanical interfaces.
Q2: Is DOWSIL 56 compatible with common elastomers such as EPDM, silicone rubber, and nitrile (NBR)?
A: Yes, DOWSIL 56 exhibits excellent compatibility with a broad range of elastomers including EPDM, silicone rubber, and nitrile—but compatibility should always be verified under actual service conditions, particularly where extended exposure or elevated temperatures are involved.
Q3: Can DOWSIL 56 be used in food-contact environments?
A: DOWSIL 56 is formulated to meet FDA requirements for incidental food contact under 21 CFR 178.3570 and is NSF H1 registered for use as a lubricant where there is potential for incidental food contact—however, it is not intended for direct or intentional food contact.
Q4: How does temperature affect the performance of DOWSIL 56 Silicone Grease?
A: DOWSIL 56 maintains stable consistency and lubricating properties across a wide temperature range, typically from −40 °C to +200 °C, making it suitable for both cryogenic and high-heat intermittent applications—though continuous operation near upper limits may reduce service life.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
