This PDMS‑based NLGI 2 silicone grease is a premium sealing and lubricating compound. It delivers stable grease consistency under fluctuating ambient conditions. The product is engineered for sealing and lubrication of control valves and O‑ring components within vacuum systems, while offering effective outdoor anti‑corrosion performance for metal and elastomer parts. It features good elastomer compatibility, low tendency to harden or bleed, and maintains sealing capability under continuous outdo

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Product DetailsPDMS‑Based NLGI 2 Silicone Grease for Valve & O‑Ring Sealing, Vacuum System and Outdoor Corrosion ProtectionFormulated with polydimethylsiloxane base fluid and selected thickener system, this NLGI grade 2 silicone grease exhibits medium‑firm grease texture, resisting dripping and migration during equipment operation. It shows excellent compatibility with most common O‑ring elastomers including nitrile, fluororubber and silicone rubber, avoiding swelling, cracking or premature aging of rubber sealing elements.

The grease creates a continuous protective lubricating film on metal surfaces of control valve spindles, valve seats and flange sealing points. This lubricating layer reduces friction torque for repeated valve opening‑closing cycles, lowers mechanical wear and extends the service lifespan of valve assemblies. When deployed in vacuum system pipelines and fittings, it maintains stable sealing performance and minimizes outgassing risk under moderate vacuum working conditions.

For outdoor working installations exposed to humidity, dew, salt mist and temperature cycling, the grease barrier inhibits rust formation and electrochemical corrosion on metallic substrates. It retains its lubricating and sealing properties over a broad service temperature range without softening at higher temperature or stiffening excessively at low temperature.

Recommended application areas include industrial process control valves, vacuum pipeline sealing joints, outdoor valve stations, mechanical O‑ring sealing points, and field‑installed fluid control equipment. It is suitable for manual greasing during routine maintenance as well as initial assembly lubrication of sealing components. Avoid mixing this silicone grease with other mineral‑based or synthetic hydrocarbon greases, as incompatibility may break down the grease structure and impair sealing performance. Store the product in tightly sealed original containers under cool, dry indoor conditions, away from direct sunlight and extreme temperature fluctuation to preserve original working consistency and sealing properties.

Next : High-Vacuum Silicone Grease CAS 63148-62-9, Low-Vapor-Pressure Low Volatile for Vacuum System O-Ring Sealing Vacuum Valve

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Silicone Grease Valve Seal CAS 63148-62-9, PDMS-Based NLGI 2 for Control Valve O-Ring Vacuum System Outdoor Corrosion Protection

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.