Lord Chemlok 234X(NW) General Purpose Rubber-to-Metal Bonding Covercoat Adhesive
Chemlok 234X(NW) is a general-purpose covercoat adhesive manufactured by Lord. This black liquid adhesive utilizes an environmentally preferred non-chlorinated solvent system (Xylene) and is designed for application over Chemlok 205 primed metals and other rigid substrates.
Product Overview
When used with Chemlok 205 primer, this covercoat adhesive bonds a wide variety of vulcanized or unvulcanized rubber compounds. It offers flexibility for uncured-to-cured systems and cured elastomer-to-cured elastomer bonds with similar compositions. Application methods include brush, dip, roll coat, or spray.
Technical Specifications
| Appearance |
Black Liquid |
| Viscosity |
400-1000 cps @ 25°C (77°F) |
| Viscosity (Zahn Cup#4) |
35-70 seconds |
| Density |
887.51-947.48 kg/m³ (7.40-7.90 lb/gal) |
| Solids Content by Weight |
16.5 - 19.5 % |
| Flash Point (Seta) |
30°C (86°F) |
| Solvents |
Xylene |
| Shelf Life |
1 year in unopened container at 21-27°C |
Key Features
Environmentally Preferred Formulation: Non-chlorinated solvent system suitable for solvent incineration, eliminating the need for recovery equipment.
Application Guidelines
Dry Film Thickness:
Standard: 12.7-25.4 microns (0.5-1.0 mil)
Cured Rubber: 20.3-38.1 microns (0.8-1.5 mil)
Cure Conditions:
Temperature: 149-177°C (300-350°F)
Time: 20-40 minutes
Compression: 5-10% during cure and cool down
Compatible Elastomers
- Natural Rubber (NR)
- Polychloroprene (CR)
- Nitrile (NBR)
- Styrene-butadiene (SBR)
Industrial Applications
Widely used in automotive applications for engine mounts and damping elements, and in industrial equipment for seals, rollers, and bushings. Suitable for part repair and fabrication of composite materials due to its ability to bond cured rubbers.
About Shenzhen Huazhisheng New Material Technology
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
