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Weekend: 10AM - 5PM
Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM


G103 uses a nitrile rubber solvent system and is supplied in a practical 170 ml tube. Its principal advantages are resistance to oil and plasticizers. This is important when bonding flexible PVC because plasticizers can migrate into some adhesive layers and gradually reduce bond strength. The nitrile rubber formulation helps maintain durable adhesion in properly prepared and qualified assemblies.
The manufacturer describes G103 as fast drying, strong, oil resistant, and suitable for bonding without temporary fixing. After both coated surfaces reach the correct contact-bonding condition and are pressed together, the adhesive develops high initial tack. This supports efficient production because parts can achieve immediate handling stability without extended clamping.
Recommended uses include bonding soft PVC to synthetic rubber or metal in industrial products. It may also be evaluated for compatible hard plastics, coated metal surfaces, leather, protective caps, flexible trim, sealing parts, labels, and nameplates. Typical industries include automotive maintenance, railway and vehicle assembly, machinery production, electrical manufacturing, interior fabrication, and general repair.
Application examples include attaching flexible PVC trim to metal panels, bonding rubber sheets to steel parts, installing vinyl covers, securing rubber components near lubricated machinery, and fixing identification plates. The product is not intended for large gaps or highly loaded structural joints. Final performance should be confirmed with the actual substrate grade, surface finish, operating fluid, temperature, and joint design.
Remove dust, rust, oil, water, loose paint, mold-release agents, and other contamination from both surfaces. Even though the cured adhesive is selected for oil-resistant applications, oil must be removed before bonding. Light abrasion may improve adhesion on suitable rubber or smooth metal surfaces, followed by complete removal of sanding residue.
Apply a thin, even layer to both surfaces. Konishi lists a standard coating weight of approximately 130 to 160 g/m² per side. Allow the solvent to evaporate until the adhesive reaches the correct contact condition, then align the parts carefully and press them together firmly. Contact adhesives bond immediately after joining, so repositioning may be difficult. A roller or press can help provide uniform contact.
Allow sufficient conditioning before exposing the assembly to demanding loads, oil, heat, or continuous service. Drying and strength development vary with temperature, humidity, coating thickness, substrate absorbency, and ventilation. Follow the current package instructions and conduct production trials before using the adhesive in safety-critical applications.
G103 is not recommended for polyethylene, polypropylene, nylon, silicone resin, or fluoropolymer surfaces. Performance can also vary with the type of synthetic rubber, plasticizer level, coating, and surface treatment. Test adhesion on representative parts before volume production.
Because it is solvent based, use effective ventilation and keep the adhesive away from flames, sparks, and hot surfaces. Wear suitable protective equipment, review the current safety data sheet, close the tube immediately after use, and store it according to the product label.
Review the official KONISHI BOND G103 product page and the official Konishi soft PVC and synthetic rubber bonding guide for current product information and technical support.
Explore our nitrile rubber adhesives for additional oil-resistant products. Browse our PVC and rubber adhesives for flexible vinyl, synthetic rubber, metal, vehicle, machinery, and repair applications. Contact our sales team for quotations, 170 ml availability, technical documents, wholesale quantities, and export support.