This iconic threadlocker locks and seals metal nuts and bolts to prevent loosening due to shock and vibration. Medium-strength: removable with hand tools.
LOCTITE® 243 is a blue, general purpose threadlocker that provides a medium-strength bond. It works on all metals without primer, including passive substrates such as stainless steel, aluminum, and plated surfaces. Suitable for use on most oil-coated, 'as-received' fasteners without cleaning.
Prevents fastener loosening on vibrating assemblies, e.g. pumps, gear boxes or presses
Works on all metals, including passive substrates
Suitable for use on most oil-coated, 'as-received' fasteners without cleaning
Can be disassembled with ordinary hand tools for easy service and maintenance
NSF/ANSI 61 certified
Ideal for heavy duty applications, such as studs into motor housings, where high strength is required
Prevents fastener loosening and leakage from shock and vibration
Permanent locking and sealing of threaded fasteners - removable with heat
Requires heat for disassembly
High temperature performance (up to 182°C / 360°F) and oil tolerance
Ideal for shafts, gears, pulleys and similar cylindrical parts
Operating temperature: -55°C to 230°C (-65°F to 450°F)
Ideal for shafts, gears, pulleys and similar cylindrical parts
High-strength on all metals, including passive substrates (e.g. stainless steel)
High temperature resistance
Fluorescent under UV for quality control
KIWA GASTEC QA AR 214 certified for hydrogen gas systems
Medium-strength for ease of disassembly
Ideal for parts that need frequent servicing
Secondary cure with activator
Works on active and passive substrates without primer
High-strength and oil resistance
Temperature resistant up to 180°C (355°F)
Fluorescent under UV for quality control
Low viscosity
High viscosity
Ideal for use with worn parts without re-machining
Registered to NSF Category P1
Suitable for retaining shims
Gap fill of 0.25 mm - 0.5 mm (0.01" - 0.02")
General-purpose structural bonder
Bonds metal to metal
Fixture time of < 3 minutes
Thixotropic for ease of application
Temperature resistance up to 120°C (248°F)
Multipurpose, multi-substrate structural bonder
Good impact resistance
Bonds dissimilar substrates
Activator required for cure
Non-corrosive
Bonds metal to metal
High temperature, chemical and environmental resistance
High shear and impact strength
Ultra-performance adhesive providing resistance up to 135°C (275°F) and fast fixture
ISO-10993 biocompatible
Ideal for quick repairs and high speed production applications
Unique, patented formula with reduced hazardous ingredients
Assembles difficult-to-bond materials using LOCTITE SF 770 or SF 7701 primer
Industrial instant adhesive
Bonds acidic surfaces
For difficult-to-bond materials
Medium viscosity
Formulated to provide flexible bondlines
Assembles difficult-to-bond plastics when LOCTITE SF 7701 primer used
Low viscosity
ISO-10993 biocompatible
Ideal for bonding porous or absorbent materials, e.g. paper, leather and fabrics
Product category:
Technologies:
Application method:
Application temperature:
Applications:
Breakaway torque, M10 Steel:
Color:
Cure type:
Fixture time:
Key characteristics:
Physical form:
Prevail torque, M10 Steel:
Recommended for use with:
Specific Gravity @ 23.0 °C:
Viscosity, Speed 20 RPM:
Threadlockers
Acrylates, anaerobic cure
Dispense gun; Dispense system; Manual
-55.0 °C - 180.0 °C (-65.0 °F - 360.0 °F)
Threadlocking
~ 26.0 N·m (~ 230.0 in./lb.)
Blue
Anaerobic cure
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Liquid
5.0 N·m (40.0 in./lb.)
Metal; Metal: passive metal
1.08
2150.0 mPa·s (cP)
Product category:
Technologies:
Agency approvals / certificates:
Application method:
Application temperature:
Applications:
Breakaway torque, M10 Steel Nuts/Bolts:
Color:
Cure type:
Fixture time:
Key characteristics:
Physical form:
Prevail torque, M10 Steel Nuts/Bolts:
Recommended for use with:
Specific Gravity @ 23.0 °C:
Viscosity, Speed 20 RPM:
Threadlockers
Acrylates, anaerobic cure
Dispense gun; Dispense system; Manual
-55.0 °C - 180.0 °C (-65.0 °F - 360.0 °F)
Threadlocking
~ 26.0 N·m (~ 230.0 in./lb.)
Blue
Anaerobic cure
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Liquid
5.0 N·m (40.0 in./lb.)
Metal; Metal: passive metal
1.08
2150.0 mPa·s (cP)
Product category:
Technologies:
Agency approvals / certificates:
Application method:
Applications:
Color:
Cure type:
Fixture time:
Gap fill:
Key characteristics:
Number of components:
Operating temperature:
Physical form:
Recommended for use with:
Shear strength, Steel:
Viscosity:
Threadlockers
Acrylates, anaerobic cure
Dispense gun; Dispense system; Manual
Threadlocking
Blue
Anaerobic cure
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Liquid
Metal; Metal: passive metal
2150.0 mPa·s (cP)
Product category:
Technologies:
Agency approvals / certificates / specifications:
Application method:
Applications:
Color:
Cure type:
Fixture time:
Gap fill:
Key characteristics:
Operating temperature:
Physical form:
Recommended for use with:
Shear strength, Steel:
Viscosity:
Threadlockers
Acrylates, anaerobic cure
Dispense gun; Dispense system; Manual
Threadlocking
Blue
Anaerobic cure
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Liquid
Metal; Metal: passive metal
2150.0 mPa·s (cP)
Product category:
Technologies:
Color:
Fixture time:
Gap fill:
Key characteristics:
Operating temperature:
Recommended for use with:
Shear strength, Steel:
Viscosity:
Threadlockers
Acrylates, anaerobic cure
Blue
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Metal; Metal: passive metal
2150.0 mPa·s (cP)
Product category:
Technologies:
Agency approvals/certificates/ specifications:
Color:
Fixture time:
Gap fill:
Key characteristics:
Operating temperature:
Recommended for use with:
Shear strength, Steel:
Viscosity:
Threadlockers
Acrylates, anaerobic cure
Blue
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Metal; Metal: passive metal
2150.0 mPa·s (cP)
Product category:
Technologies:
Agency certificates:
Application method:
Applications:
Color:
Cure type:
Fixture time:
Gap fill:
Key characteristics:
Operating temperature:
Physical form:
Recommended use with:
Shear strength, Steel:
Viscosity:
Threadlockers
Acrylates, anaerobic cure
Dispense gun; Dispense system; Manual
Threadlocking
Blue
Anaerobic cure
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Liquid
Metal; Metal: passive metal
2150.0 mPa·s (cP)
Product category:
Technologies:
Applications:
Chemical base:
Color:
Cure type:
FEA (finite element analysis):
Fixture time:
Key characteristics:
Shear strength, Steel:
Viscosity, Brookfield - RVT @ 25°C:
Viscosity, EN 12092 - MV @ 25°C:
Threadlockers
Acrylates, anaerobic cure
Threadlocking
Blue
Anaerobic cure
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
2150.0 mPa·s (cP)
Product category:
Technologies:
Agency approvals/certificates/specifications:
Applications:
Color:
Cure type:
FEA (finite element analysis):
Fixture time:
Key characteristics:
Number of components:
Viscosity, Brookfield - RVT @ 25°C:
Threadlockers
Acrylates, anaerobic cure
Threadlocking
Blue
Anaerobic cure
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
2150.0 mPa·s (cP)
Product category:
Technologies:
Applications:
Color:
Cure type:
FEA (finite element analysis):
Key characteristics:
Number of components:
Physical form:
Threadlockers
Acrylates, anaerobic cure
Threadlocking
Blue
Anaerobic cure
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Liquid
Product category:
Technologies:
Application method:
Applications:
Color:
Cure type:
Fixture time, Steel (grit blasted):
Gap fill:
Key characteristics:
Operating temperature:
Physical form:
Recommended for use with:
Shear strength, Mild Steel:
Viscosity:
Threadlockers
Acrylates, anaerobic cure
Dispense gun; Dispense system; Manual
Threadlocking
Blue
Anaerobic cure
10.0 min.
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Liquid
Metal; Metal: passive metal
2150.0 mPa·s (cP)
Product category:
Technologies:
Cure type:
Key characteristics:
Number of components:
Physical form:
Recommended for use with:
Specific gravity, @ 25.0 °C:
Threadlockers
Acrylates, anaerobic cure
Anaerobic cure
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
Liquid
Metal; Metal: passive metal
1.08
Product category:
Technologies:
Agency certificates:
Cure type:
Key characteristics:
Number of components:
Physical form:
Recommended for use with:
Specific gravity, @ 25 °C:
Threadlockers
Acrylates, anaerobic cure
Anaerobic cure
Disassembly: removable; Fluorescent; General purpose; Oil tolerant; Primerless; Strength: medium strength; Thixotropic
