Prevents Nuts and Bolts from Loosening with Vibration
Our 3M™ Scotch-Weld™ Threadlocker TL90 hardens and seals threaded assemblies to resist vibration and prevent loosening or leakage of secured fasteners. Applying this adhesive to fasteners after tightening seals out moisture and prevents corrosion. Application is fast and easy with just a targeted squeeze of the bottle. The anaerobic formulation begins to cure quickly into a polymer that seals, secures, and retains. An activator can be used for even faster cure or larger gap sizes. This very low viscosity adhesive flows into threads after parts are assembled and loosens when needed with regular hand tools.
Recommended Applications
- Threadlocking of screws, bolts and nuts after assembly
- Applications vary by temperature resistance, removability and oil tolerance
Eliminates the Need for Lock Washers and Other Locking Components
Our 3M™ Scotch-Weld™ Threadlocker TL90 is effective for locking, vibration resistance, sealing, and bonding threaded assemblies. Places where it is useful include machine tool access bolts, hydraulic system bolts, gear box/driveshaft bolts, bearing cover cap screws, countersunk screws and conveyor roller bolts.
Understanding Anaerobic Adhesives
Anaerobic adhesives are uniquely formulated to cure in the absence of oxygen. The term “anaerobic” means “living without air” and when the oxygen is excluded, a chemical chain reaction begins that causes the adhesive to polymerize. Contact with metal speeds the polymerization process and rapidly accelerates the curing process, forming tough cross-linked plastic that provides aggressive adhesion with effective shear strength.
More commonly referred to as threadlockers, pipe sealants, retaining compounds, and gasket makers, these adhesives are often used to enhance the seal, or holding force, in the threads of joined fastener systems such as nut-and-bolt assemblies. A nut-and-bolt assembly may have as little as 15% metal-to-metal contact and even a small amount of anaerobic adhesive readily fills any air voids between the threads and then hardens to a thermoset plastic. These unique adhesives are easy-to-dispense, cure rapidly, and provide effective torque strength while resisting temperature and vibration and sealing out moisture and gasses to protect against corrosion. Anaerobic adhesives can decrease manufacturing costs, enhance equipment reliability, minimize aftermarket breakdown, and reduce warranty claims.

Norton 66261014936 3" DIA X 1/8" Thick, Bear-Tex NEX Rapid Blend Quick-Change Type III Non-Woven Unified Wheel, 40 Each
Dynabrade 78127 3" Dia. Medium NWN VT DynaBrite Locking-Type Disc, 25/pack
Norton 66261014793 - 3" Medium Grade Aluminum Oxide Bear-Tex Speed-Lok High Strength Maroon TR Non-Woven Abrasive Disc, 80 Each
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
Dynabrade 98263 3/8" NPT Male Plug
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
ACS CX1250 Diamond Belt, 1/2" X 24" 74u
Insize ISV-1H6329, RIGID BORESCOPE, 12.99", 6928640323904
Dynabrade 51470 6"-8" Dia. Right Angle Two-Hand Rotary Buffer, .7 hp, 0-2,000 RPM, Rear Exhaust, 5/8"-11 Spindle Thread
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
Standard Abrasives 727395, Buff and Blend Cross Buff HS, A/O Coarse, 2 in x 1/2 in x 2 Ply x 8-32, 7010299537
Dynabrade 51392 6"-8" Dia. Right Angle Two-Hand Rotary Buffer, 1 hp, 2,800 RPM, Rear Exhaust, 5/8"-11 Thread
Norton 66261043421 - 2" Dia. Disc, 120 Grit, Blaze, 2 Ply, Flex W/ Quick-Change, 25 Each
Dynabrade 98272 1/2" NPT Female Plug
Dynabrade 51401 3" Dia. 7 Degree Offset Rotary Buffer, .4 hp, 5,000 RPM, Rear Exhaust, 3/8"-24 Spindle Thread
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Dynabrade 78176 2" Dia. Medium NWN VT DynaBrite TR Locking-Type Disc, 25/pack
3M 05479, Cubitron II Cloth Belt 981F, 1/2 x 24 in, 36+, YF-weight, Fabri-lok, 7100163424, 200 per case
3M 08275, Rigid Parts Repair, 08275, Blue, 400 mL Cartridge, 7000119864
Dynabrade 40610 Electric Dynafile II Abrasive Belt Tool
Standard Abrasives 724277, Buff and Blend Circle Buff GP, A/O Very Fine, 2 in x 2 Ply x 8-32, 7010368699
3M 76632, Roloc Disc 777F, 50 YF-weight, TR, 3 in, Die R300V, 7000045628
3M 33440, Cubitron II File Belt, 33440, 80+, 10 mm x 330 mm (3/8 in x 13 in), 7100033195, 10 belts per carton, 5 cartons per case 
