LOCTITE 277 is a high-strength anaerobic adhesive designed for the permanent locking and sealing of threaded fasteners. This robust formulation effectively prevents loosening and leakage. It protects against shock and vibration in demanding industrial environments.
General Information of LOCTITE 277
LOCTITE 277 utilizes advanced acrylic technology. Its chemical base is a dimethacrylate ester. This product presents as a distinct red liquid in its uncured state. Furthermore, it is a one-component system, requiring no prior mixing. The adhesive cures when confined between close-fitting metal surfaces, specifically in the absence of air. This anaerobic curing mechanism ensures a reliable, high-strength bond. Activators can accelerate the cure speed when necessary.
Key Features & Technical Benefits
- Permanent Locking: This adhesive permanently secures threaded fasteners. It eliminates the risk of loosening under dynamic loads.
- High Strength: LOCTITE 277 provides superior holding power. It withstands extreme operational stresses.
- Vibration and Shock Resistance: The cured product forms a robust seal. Consequently, it prevents fastener failure due to severe vibration or impact.
- Leakage Prevention: It effectively seals threads. This prevents fluid or gas leakage through the fastener assembly.
Typical Industrial Applications
This formulation is engineered for the following applications:
- Locking and sealing large bolts and studs (M25 and larger)
- Securing fasteners in thru-hole configurations
- Sealing internal threads in blind-hole applications
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
| Technology | Acrylic |
| Chemical Type | Dimethacrylate ester |
| Appearance (uncured) | Red liquid |
| Components | One component |
| Viscosity (Brookfield, 25 °C) | 6,000 to 8,000 mPa·s (cP) |
| Cure Mechanism | Anaerobic |
| Strength | High |
| Specific Gravity @ 25 °C | 1.12 |
| Breakaway Torque (M10 steel, 24h @ 22 °C) | 32 N·m (280 lb.in) |
| Prevail Torque (M10 steel, 24h @ 22 °C) | 32 N·m (280 lb.in) |
| Compressive Shear Strength (Steel pins, 24h @ 22 °C) | ≥9 N/mm² (≥1,300 psi) |
