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INTRODUCTION THREADLOCKING INTRODUCTION TO ANAEROBIC ADHESIVES AND SEALANTS THRU HOLES (BOLTS AND NUTS) Anaerobic adhesives and sealants were developed by the founder of Loctite LIQUID AND SEMI-SOLIDS Corporation, now Henkel Corporation, in 1953 and, since then, they have Apply Here significantly evolved to meet the highest requirements of equipment manufacturers, maintenance and overhaul. Anaerobic adhesives and sealants are resins that convert from liquid to a tough structural solid in the absence of air and the presence of metal. The primary functions of anaerobic resins are: Not Here Threadlocking Thread Sealing Gasketing Retaining 1. Clean all threads (bolt and nut) with Loctite� ODC-Free Cleaner & Degreaser. 2. If necessary, spray all threads with Loctite� 7649TM Primer NTM. Allow to dry. 3. Select the proper strength Loctite� threadlocker. 4. Insert bolt into thru hole assembly. 5. Apply several drops of liquid threadlocker onto bolt at targeted tightened nut engagement area or, when using the stick product, completely fill the root of the threads at the area of engagement. 6. Assemble and tighten nut as usual. Each one of these functions is based upon control of five major variables: BLIND HOLES (CAP SCREWS, ETC.) strength, viscosity, adhesion, flexibility, and temperature resistance. These five parameters give anaerobics users considerable latitude in adjusting Onto LIQUID ONLY Threads properties for optimum performance in specific application areas. Another variable that should be considered is the substrate in which Onto the adhesive will be applied. For certain substrates or other special Threads requirements, the use of primer is recommended. WHY USE A PRIMER? 1. Primers activate inactive surfaces. 1. Clean all threads (bolt and hole) with Loctite� ODC-Free Cleaner & Degreaser. 2. Primers speed cure times for faster return to service. 2. If necessary, spray (bolt and hole) with Loctite� 7649TM Primer NTM. 3. Primers speed curing through larger gaps and deep threads. Allow 30 seconds to dry. 4. Primers substantially speed cure times on cold parts. 3. Select the proper strength Loctite� threadlocker. 5. Primers act as cleaning agents. 4. Squirt several drops down the sides of the female threads. Active surfaces (Primer optional): Brass, copper, bronze, iron, soft steel, nickel. 5. Apply several drops to bolt. Inactive surfaces (Primer required): Aluminum, stainless steel, magnesium, 6. Tighten as usual. zinc, black oxide, cadmium, titanium, others. Note: Using Loctite� threadlockers will virtually eliminate stripped threads, in aluminum or magnesium housings, caused by galvanic corrosion. 4 5
Goodyear Rubber Products
