LOCTITER SF 7649 Anaerobic Adhesive Activator for Metal Threadlocking & Sealing

LOCTITER SF 7649 is a solvent-based, single-component surface activator (primer). It appears as a transparent green liquid with very low viscosity, based on an solvent system containing copper salts and aliphatic amines. It is non-curing by itself and is specifically designed to accelerate the curing of LOCTITER anaerobic adhesives and sealants.

This activator significantly boosts the cure speed of anaerobic products on passive metal surfaces (e.g., stainless steel, plated steel) and under low-temperature conditions (below 15°C). It enables reliable bonding even in large gap applications where anaerobic adhesives would normally cure slowly or fail to cure. After application, the solvent evaporates quickly (30-70 seconds), leaving an active layer that remains effective for up to one month before the adhesive is applied.

A key advantage is that it accelerates curing without significantly reducing the final bond strength. It is certified to ANSI/NSF 61for indirect contact with potable water systems (up to 82°C) and NSF Category P1for non-food contact areas in food processing equipment. As a highly flammable liquid, it requires careful handling and storage between 8°C and 21°C to maintain performance.

LOCTITER SF 7649 is widely used in automotive manufacturing, machinery, and aerospace for activating surfaces prior to applying threadlockers (e.g., LOCTITER 243), retaining compounds, and gasketing products. Typical applications include activating stainless steel or zinc-plated threaded fasteners, hydraulic fittings, and pipe threads in low-temperature assembly environments to ensure rapid fixture and full cure.

1. Who are we?

   We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a professional industrial adhesives and sealants supplier based in China since 2018. we serve global markets: Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).

2. What products do you offer?

   we supply high-performance adhesives and sealants from global leaders including: Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive, etc.

3. How do you guarantee product quality?

   Quality assurance through: Mandatory pre-production samples approval Final inspection by QC team before shipment International certifications: SGS, UL, FDA, RoHS, REACH

4. Why choose us over other suppliers?

   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

5. What services do you provide?

   Delivery: EXW/FOB/CIF Payment: USD/EUR/CNY/HKD via T/T, L/C Support: Technical consultatiozxn & logistics coordination