Molykote High Vacuum Grease for Aerospace/Semiconductor Sealing
Basic Properties
Molykote High Vacuum Grease is an inorganic-thickened silicone grease, white to gray translucent. Unworked penetration 170-230 mm/10, worked penetration <260 mm/10. Designed for high-vacuum/extreme-temperature sealing in -40°C to 200°C, compliant with FDA 21 CFR 175.300.
Product Description
Formulated with silicone oil + inorganic thickener. Features <0.5% bleed @200°C and <2.0% evaporation loss. Resists water/chemicals/acids/alkalis. Non-melting property prevents leakage in ultra-high vacuum (10⁻⁸ Torr).
Characteristics
| Property | Value | Test Standard |
| Unworked Penetration | 170-230 mm/10 | ISO 2137 |
| Worked Penetration | <260 mm/10 | ISO 2137 (60 strokes) |
| Bleed Rate | <0.5% | CTM 0033A @200°C/24h |
| Evaporation Loss | <2.0% | CTM 0033B @200°C/24h |
| Melting Point | None | — |
| Chemical Resistance | Insoluble in water/ alcohols/ketones | Solubility test |
Application Scenarios
Space Telescopes: Lubricates O-rings in mirror actuators. <2% evaporation prevents optics contamination, compliant with NASA MSFC-SPEC-292.
Semiconductor Etching: Seals vacuum chamber flanges. 10⁻⁸ Torr stability, implemented in ASML lithography systems.
MRI Cryogenic Seals: Seals superconducting coil joints. -40°C fluidity ensures cryogenic reliability, used in Siemens MAGNETOM.
Food Packaging: Lubricates ceramic valve stems. FDA compliance meets GMP requirements.
FAQ:
1. Who are we?
We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a professional industrial adhesives and sealants supplier based in China since 2018. we serve global markets: Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).
2. What products do you offer?
we supply high-performance adhesives and sealants from global leaders including:
Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive,etc.
3. How do you guarantee product quality?
Quality assurance through:
Mandatory pre-production samples approval
Final inspection by QC team before shipment
International certifications: SGS, UL, FDA, RoHS, REACH
4. Why choose us over other suppliers?
Reliable Supply:Authentic products from top manufacturers
Expert Support:Technical guidance for product selection
Global Compliance:Certifications meeting target market standards
Efficient Service:Customized solutions & professional support
5. What services do you provide?
Delivery:EXW/FOB/CIF
Payment:USD/EUR/CNY/HKD via T/T, L/C
Support:Technical consultation & logistics coordination
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