Nyco NYCOLUBE 25681 (2.2 lb / 1 kg Can)

NYCOLUBE® 25681 Synthetic Lubricating Oil with Molybdenum Disulphide

Overview

NYCOLUBE® 25681 is a high-temperature synthetic lubricating oil containing a fine dispersion of molybdenum disulphide (MoS₂) in methylphenylpolysiloxane oil. Developed by NYCO Defence, it is designed to lubricate low-speed sliding surfaces operating at temperatures up to 400°C while also serving as an anti-seize compound for threaded engine and nacelle components exposed to temperatures up to 760°C. Qualified to MIL-DTL-25681E, NYCOLUBE® 25681 is widely used throughout the aerospace industry for assembly, maintenance and high-temperature protection of critical hardware.

Key Technical Specs

• Product Type: Synthetic lubricating oil with molybdenum disulphide
• Lubricant Base: Methylphenylpolysiloxane oil
• Solid Lubricant: Molybdenum disulphide (MoS₂)
• Colour: ASTM D1500 - 0.5 (Maximum 2.0)
• Kinematic Viscosity at 40°C: 78.2 mm�/s
• Kinematic Viscosity at 100°C: 20.6 mm�/s
• Flash Point (COC): 314°C
• Lubricating Temperature Range: Up to 400°C
• Anti-Seize Temperature Capability: Up to 760°C

Approvals & Specifications

• MIL-DTL-25681E
• DOD-L-25681D
• NATO Code: S-1735
• OX-70

Typical Applications

• Low-speed sliding surfaces
• Aircraft engine threaded components
• Nacelle fasteners and threaded assemblies
• High-temperature anti-seize protection
• Aerospace assembly and overhaul operations
• Military and commercial aircraft maintenance

Compatibility & Safety Notes

• Specifically formulated for aerospace high-temperature lubrication applications
• Thoroughly stir before use as the molybdenum disulphide particles may settle during storage
• Apply only to clean, dry surfaces for optimum lubrication and anti-seize performance
• Avoid contamination of the product during application
• Refer to the applicable Safety Data Sheet (SDS) before handling

Packaging & Procurement

• Available through NYCO Aerospace and Defence distribution channels
• Supplied in various industrial container sizes (subject to regional availability)

Why This Product is Chosen for AOG / MRO

• Provides reliable lubrication at temperatures beyond the capability of conventional oils
• Prevents seizure of threaded engine and nacelle components exposed to extreme heat
• Excellent molybdenum disulphide formulation reduces wear on low-speed sliding parts
• Qualified to recognised military aerospace specifications
• Suitable for both assembly and overhaul maintenance operations
• High flash point improves safety during high-temperature service

Practical Suggestions for Your Team (AOG Mindset)

• Always stir the lubricant thoroughly before use to ensure an even dispersion of molybdenum disulphide
• Apply a thin, uniform coating to threaded components to maximise anti-seize performance
• Use during engine and nacelle assembly where future disassembly is anticipated
• Avoid excessive application, as only a thin lubricating film is required for effective protection
• Keep containers tightly sealed after use to minimise contamination during maintenance operations

Manufacturer / Aviation Spec Codes

• Manufacturer: NYCO
• Product Name: NYCOLUBE® 25681
• Product Type: Synthetic lubricating oil with molybdenum disulphide
• NATO Code: S-1735
• Military Specification: MIL-DTL-25681E (DOD-L-25681D)
• Military Designation: OX-70
• Primary Application: High-temperature lubrication and anti-seize protection for aircraft engines and nacelles