Loctite 263 High Strength Threadlocker
Permanent fastener locking and sealing solution for demanding industrial applications.
Product Overview
Loctite 263 is a single-component, red, low-viscosity anaerobic acrylic threadlocking adhesive with fluorescence under UV light. Designed for permanent locking and sealing of threaded fasteners, it prevents loosening and leakage from shock and vibration.
Technical Specifications
| Property |
Typical Value/Range |
Test Condition/Method |
| Chemical Type |
Dimethacrylate ester |
- |
| Appearance (Uncured) |
Red liquid |
- |
| Fluorescence |
Positive under UV light |
- |
| Specific Gravity |
1.1 |
@23°C |
| Viscosity |
500 mPa*s |
Brookfield RVT @25°C, spindle 2, 20 rpm |
| Breakaway Torque (M10 steel) |
33 N*m |
ISO 10964, 24hr @23°C |
| Prevail Torque (M10 steel) |
33 N*m |
ISO 10964, 24hr @23°C |
| Compressive Shear Strength |
≥9.0 N/mm² |
ISO 10123 |
| Hot Strength Retention (125°C, 1000h) |
75% |
In motor oil |
Performance Characteristics
This high-strength threadlocker develops a breakaway torque of 33 N*m on M10 steel nuts and bolts after 24 hours at 23°C. It exhibits excellent chemical resistance, retaining 95% strength after 1000 hours in unleaded gasoline and 100% in brake fluid at 22°C. The product shows good performance in harsh conditions with 75% strength retention after 1000 hours in motor oil at 125°C.
Cure Speed vs. Substrate
The rate of cure depends on the substrate material. The graph below shows breakaway strength development over time at 23°C on M10 steel nuts and bolts compared to different materials (tested according to ISO 10964).
Cure Speed vs. Temperature
The rate of cure depends on temperature conditions. The graph below shows breakaway strength development over time at different temperatures on M10 steel nuts and bolts (tested according to ISO 10964).
Application Scenarios
LOCTITE 263 is widely used in heavy-duty applications including:
- Motor housing studs and pump housing nuts
- High-strength fasteners in automotive, aerospace, and industrial machinery
- Sealing and locking components in high-vibration environments like engines and hydraulic systems
Company Information
About Us
Shenzhen Huazhisheng New Material Technology Co., Ltd. is a professional industrial adhesives and sealants supplier based in China since 2018, serving global markets including Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).
Product Portfolio
We supply high-performance adhesives and sealants from global leaders including Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive.
Quality Assurance
Our quality assurance process includes mandatory pre-production samples approval, final inspection by QC team before shipment, and international certifications: SGS, UL, FDA, RoHS, REACH.
Why Choose Us
- 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
Services
Delivery: EXW/FOB/CIF
Payment: USD/EUR/CNY/HKD via T/T, L/C
Support: Technical consultation & logistics coordination
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