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3M™ Scotch-Weld™ Threadlocker TL22, Purple, One-Component Anaerobic Adhesives

Item No: TL22
Manufacturer: 3M™ Scotch-Weld™
Technologies: Dimethacrylate
Color: Purple
Cure Type: Anaerobic
Package Size: 50 mL bottle
Shelf Life: 18 months

Product Description

3M™ Scotch-Weld™ Threadlocker TL22 is a low-strength, medium-viscosity one-component anaerobic adhesive designed for locking and sealing threaded assemblies. It cures in the absence of air between close-fitting metal surfaces, providing excellent resistance to vibration, corrosion, and shock. This threadlocker is removable with hand tools, making it ideal for small-diameter screws, set screws, nuts, bolts, and hex- and slot-driven components.


Key Features

  • Low Strength: Easily removable with standard hand tools.
  • Prevents Corrosion: Seals threads completely to prevent rust and leaks.
  • Fluorescent for Inspection: Contains a dye for easy detection under UV light.
  • Vibration and Shock Resistance: Maintains secure fastening under mechanical stresses.
  • Fast Setting: Cures quickly upon assembly; full cure in 24 hours at room temperature.

Recommended Applications

  • Securing small-diameter, fine-threaded screws and set screws.
  • Locking nuts, bolts, and keyed fasteners in place.
  • Preventing vibration-induced loosening in assemblies.
  • General-purpose threadlocking where easy disassembly is needed.

Technical Data

Typical Uncured Physical Properties

Attribute Name Value
Color Purple¹
Viscosity 800 – 1,600 cP²
Chemistry Dimethacrylate
Fixture Time 20 min (avg), range: 10–30 min³

¹ Colors may vary from nearly white to yellow/amber; performance is not affected.
² Measured using Brookfield Viscometer spindle #3 at 20 rpm.
³ Reference ISO 10964.


Typical Cured Characteristics

Attribute Name Value
Cured Color Purple
Temperature Resistance (Long-Term) -54°C to 149°C (-65°F to 300°F)

Typical Performance Characteristics

Attribute Name Test Method Value
Breakaway Torque ISO 10964 95 in-lb (30-100 in-lb range)¹
Prevailing Torque 40 in-lb (10-100 in-lb range)¹

¹ Reference ISO 10964. To convert to N·m, divide in-lb by 8.851.

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