Lord Chemlok 238(NW) Non-Polar Elastomer Bonding Covercoat Adhesive
Chemlok 238(NW) is a specialized covercoat adhesive manufactured by Lord, designed specifically for bonding non-polar elastomers. This black liquid adhesive features a non-chlorinated solvent system and offers excellent bonding performance for challenging rubber compounds.
Product Overview
This adhesive is engineered to bond non-polar rubber compounds based on butyl and EPDM, providing exceptional versatility for various bonding applications. It effectively handles uncured-to-cured systems and bonds between cured elastomers with similar compositions. Application methods include brush, dip, roll coat, or spray to accommodate diverse production requirements.
Technical Specifications
| Appearance |
Black Liquid |
| Viscosity |
150-800 cps @ 25°C (77°F) |
| Density |
881.52-928.5 kg/m³ (7.35-7.75 lb/gal) |
| Solids Content by Weight |
12.0 - 15.0 % |
| Flash Point (Seta) |
33°C (92°F) |
| Solvents |
Xylene |
| Shelf Life |
1 year from date of shipment in unopened container at 21-27°C |
Key Features
Chemlok 238(NW) excels at bonding non-polar elastomers like Butyl and EPDM, which are typically difficult to adhere. Recommended dry film thickness is 10.2-25.4 microns (0.4-1.0 mil) for standard applications, while cured rubber bonding requires 25.4-38.1 microns (1.0-1.5 mil). Storage above 21°C (70°F) prevents gel formation; if gelling occurs, heating above 38°C (100°F) with high-speed agitation reverses the process.
Application Areas
Ideal for manufacturing rubber-metal composites requiring excellent resistance to weathering, hot air, and chemicals. Common applications include:
- Automotive door seals, window channels, and coolant hose connectors
- Architectural gaskets and sealing systems
- Weather-resistant damping components in industrial equipment
- Part repair and reconditioning of cured elastomers
About Shenzhen Huazhisheng New Material Technology
Established in 2018, we are a professional industrial adhesives and sealants supplier 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 comprehensive quality process includes pre-production sample approval, final inspection by QC team, 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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