Introduction to Vacuum Silicone Grease
Vacuum silicone grease, a non-hardening silicone-based lubricant, finds its application in electronic and electrical components, connectors, and joints. It serves to seal, protect, and maintain these vital parts. Designed specifically for automotive, electronics, electrical industries, and various industrial needs, its appearance is clean, transparent, and it boasts high dielectric strength (excellent insulating properties). It is also compatible with a wide range of plastics, rubber materials, and its products.
Belonging to the synthetic lubricant category, vacuum silicone grease surpasses petroleum-based counterparts with a broader operational scope. It excels in high-temperature resilience, resistance to aging and ozone, and exhibits excellent hydrophobicity. Additionally, it offers outstanding waterproofing, moisture resistance, and vacuum sealing capabilities, guarding against the intrusion of dust and contaminants into sealed areas. Its versatility extends to functioning as both insulating and vacuum grease.
Composition of Vacuum Silicone Grease
This semi-transparent paste is formulated with inorganic thickeners that thicken synthetic oil. It is enriched with various additives and structure-improving agents.
Applications of Vacuum Silicone Grease
- Lubricating and protecting electronic and electrical components from moisture.
- Safeguarding ignition coils, automotive battery wires, and connector cables.
- Shielding spark plugs and covers of electrical distribution components.
- Lubricating precision medical equipment.
- Enhancing insulation, waterproofing, and anti-flashover properties in electronics: motors, electronic components, and semiconductor sealing.
- Serving precision instruments: precise instruments, optical devices, analytical balances.
- Benefiting plastics: plastic gears, plastic threads, and plastic gears.
- Assisting rubber applications: O-rings, cushioning materials for shock absorbers, and rubber components (such as washers).
- Facilitating lubrication between plastic and rubber, plastic and metal, and metal and rubber.
- Ensuring vacuum sealing for various types of valves, hydraulic pistons, and providing sealing, rust prevention, and waterproofing for metal pipelines.
- Catering to O-ring rubber seals for aircraft landing gear wheels, high-temperature motor rolling bearings with H-grade insulation, and lubrication for railway vehicle.
Common Types of Vacuum Silicone Grease
The three commonly used types are 3# vacuum silicone grease, 4# vacuum silicone grease, and 7501 vacuum silicone grease. Below are the detailed performance characteristics of these three types.
1. 3# Vacuum Silicone Grease
- Outstanding lubrication and sealing performance.
- Suitable viscosity and stable at room temperature, allowing for extended usage.
- Application Range:
- Primarily for lubricating sealing boxes in active and detachable parts of vacuum systems.
- Suitable for use under 30°C conditions.
- Technical Parameters:
- Saturation vapor pressure (20°C, Pa): not more than 133.322×10-6 Pa
- Kinematic viscosity (mm2/s): 40-60
- Dropping point: not less than 55°C
- Microharness (25°C, 1/10 mm): 30-50
- Usage Precautions:
- Avoid exposure to sunlight and direct flame.
- Store below 40°C.
- Before applying silicone grease, clean and dry glass pistons and ground joints sequentially with solvent, potassium dichromate solution, and distilled water.
2. 4# Vacuum Silicone Grease
- Excellent lubrication and sealing performance.
- Suitable viscosity and stable at room temperature, allowing for extended usage.
- Application Range:
- Primarily for lubricating sealing boxes in active and detachable parts of vacuum systems.
- Highest operating temperature is 120°C, suitable for high vacuum systems.
- Technical Parameters: same as that of 3# grease
- Usage Precautions:
- Avoid exposure to sunlight and direct flame.
- Store below 40°C.
- Before applying silicone grease, clean and dry glass pistons and ground joints sequentially with solvent, potassium dichromate solution, and distilled water.
3. 7501 Vacuum Silicone Grease
- Detailed Introduction of 7501 High Vacuum Silicone Grease:
- High vacuum silicone grease is refined from various additives such as inorganic thickeners, synthetic oil, viscosity modifiers, and structure-improving agents through special processes. It exhibits good chemical stability, strong material adaptability, a wide range of use temperatures, and functions in both sealing and lubrication.
- Performance Characteristics:
- Excellent thermal stability and chemical stability.
- Extremely low volatile loss and excellent sealing function.
- Strong material adaptability, wide range of use temperatures: -50~+220°C.
- Recommended Applications:
- Lubrication and sealing for glass pistons and ground joints in vacuum systems with 6.7×10-4Pa.
- Lubrication and sealing under conditions involving bromine, water, acid-base, and other chemical media.
- Electrical insulation, anti-flash dirt, damping, shock absorption, dustproofing, demolding, and sealing.
- Lubrication and sealing for electrical switches, O-ring seals, automotive brake pumps, valves in petrochemical plants, and other devices.
- Sealing and lubrication between rubber and metal, electrical insulation, and sealing.
4. Usage Instructions:
- Apply this product directly during usage.
- Coolink: TOP 3 Global HVAC Vacuum Pump Manufacturer
- Elitevak: Quality Industrial Vacuum Pump Supplier from China
