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Sinopec 7903 Oil-Resistant Sealing Grease

Type:  grease

Implementation Standards:  SH/T0011-90

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Use:  Ideal for static seals and low-speed sliding/rotating seals in machinery, pipelines, valves

Sinopec 7903 Oil-Resistant Sealing Grease combines differentiated model design and high-performance formulations to deliver exceptional oil resistance and reliability across industrial and specialized sealing applications.

1. Product Composition & Models

  • Base Formula: Formulated with inorganic thickener and synthetic oil, enhanced with antioxidants, anti-corrosion agents, and other additives, providing both lubrication and sealing functions.

  • Model Variations: Includes core models 7903, 7903-1, 7903-2, and 7903-3, with extended derivatives such as 7903-4 (methanol-resistant) and 7903-5 (wide temperature range) to address diverse application scenarios.

2. Core Performance

  • Oil Resistance: Resists dissolution and dispersion by gasoline, kerosene, lubricating oils, water, ethanol, liquefied petroleum gas (LPG), and other media, ensuring reliable sealing.

  • High-Temperature Stability: Dropping point exceeds 330°C. Operating temperature ranges vary by model:

    • General models: -40°C to 150°C

    • Specific models (e.g., 7903-1): Extended low-temperature performance down to -20°C.

  • Mechanical Properties: Excellent adhesion, pressure resistance, vibration resistance, and oxidation stability. Maintains flexibility over long-term use without hardening, simplifying maintenance.

  • Safety & Compatibility: Passes copper/steel corrosion tests per standards SH/T 0011—90 and Q/SH303 511—2006.

3. Applications

  • Industrial Equipment: Ideal for static seals and low-speed sliding/rotating seals in machinery, pipelines, valves (e.g., boiler oil presses, natural gas gate valves). Field applications have demonstrated effective sealing with zero leakage.

  • Specialized Fields: Used in aviation (e.g., aircraft fuel systems), oil exploration (e.g., gas wellhead equipment), automotive, and other high-temperature/oil-exposed environments.

  • Special Media Compatibility:

    • 7903-4: Designed for methanol-containing environments.

    • 7903-5: Operates across a broad temperature range (-40°C to 150°C).

4. Technical Standards & Packaging

  • Standards:

    • Base model 7903: Complies with SH/T 0011—90.

    • Other models (7903-1 to 7903-3): Follow Q/SH303 511—2007.

  • Packaging: Primarily 1kg plastic containers; select models offer 250g or 17kg bulk packaging.

5. Usage & Precautions

  • Application Guidelig:Clean the application area before use to avoid contamination. Store in a sealed condition post-use to prevent oxidation or exposure to corrosive media.

  • Procurement Channels: Available through Sinopec-authorized distributors (e.g., Beijing Luhang Aviation), supporting bulk orders and customized requirements.

6. Market Feedback & Expansion

  • Success Stories: Widely adopted in petroleum, steel, aviation, and other industries for stable performance and practicality.

  • Extended Models: Tailored derivatives address niche needs (methanol resistance, extreme temperatures), enhancing versatility.

Summary: The Sinopec Great Wall 7903 series combines differentiated model design and high-performance formulations to deliver exceptional oil resistance and reliability across industrial and specialized sealing applications. Optimal results require selecting the appropriate model based on operating conditions (temperature, media, equipment type) and adhering to usage guidelines.

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