Top 10 Best loctite 680 in 2026

Last Updated - 6/30/2026

🏆Best Choice

Loctite

Loctite Threadlocker Blue 242 - Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Lock and Seal Fasteners: Prevents loosening of metal fasteners caused by vibration on small motors, mowers, and power equipment
•Prevents Rust and Corrosion: Protects from leaks, rusting, and corrosion and eliminates need to stock up on expensive lock nuts and washers
•Removable: Can be removed with hand tools
•Easy and Quick: Sets in 10 minutes and fully cures in 24 hours
•For 6-19mm Fasteners: Medium-strength formula for use on threads for 6mm to 19mm nuts and bolts

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$5.80

$7.98

-27%

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ESKONKE

ESKONKE Retaining Compound Green 680 Sleeve Retainer High Strength Cylindrical Metal Components Assemblies Locking and Sealing Anaerobic Glue 1.69 Oz/50 ml

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Ideal glue for the installation of smooth/unthreaded cylindrical metal assemblies: 1,Fill the voids and reduce the precision requirements of design, production and installation; 2,Prevent assembly from loosening, wear and corrosion; 3,Evenly distribute loads and stresses during assembly; 4,Sealed from oxygen and other contaminants. Extend the life and safe use of the equipment!
•High Strength: After complete curing, Shear strength can be comparable to that of metal materials (609 ≈ Aluminum, 620 & 680 ≈ Copper, 603 & 638 ≈ %0.1 C Steel, 648 ≈ %0.2 C Steel), Ensuring efficient and stable operation of the equipment. Needs to be heated to 250 ℃/482℉ when disassembling, and mechanical auxiliary equipment is required.
•Applicable Scope: Suitable for the assembly of any smooth, unthreaded cylindrical metal components, Such as keys and shafts, bearing, rotor shaft, bushing, casing, cylinder liner, key slot, valve sleeve, movement sleeve, valve bushing etc. Choose the appropriate use according to the characteristics of different models.
•Applicable Material: Suitable for all kinds of solid metals, even metals with active surfaces such as iron, copper, brass, steel, etc. not to mention metals with inert surfaces such as stainless steel, aluminum, gold, etc.
•Simple Use: Just apply the product evenly to the fixed location, the product will start curing within 60 minutes after the assembly is installed, and it can be used normally after 24 hours of standing.
•Function: Fill gaps between components / Lock components to prevent loosening / Prevent component abrasion & corrosion / Improve the accuracy of component fit / Isolate oxygen and prolong product life / Tightness to prevent leakage / Evenly distribute loads and stresses / Repair minor defects in parts / Reduce design and process complexity

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$9.99

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GNEOCO

ThreadLocker Green, Thread Lock High Strength Lock Tight for Nuts, Bolts, Fasteners and Metals, Anaerobic Curing Metal Glue to Prevent Loosening and Corrosion (H680-50ml)

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Prevents Rust and Corrosion: Protects from leaks, rusting, and corrosion and eliminates need to stock up on expensive lock nuts and washers
•Easy to Use: Simply apply the threadlocker evenly to the thread, tighten the nut, and cure initially for 20 minutes, then your Items can be used normally after fully cured in 24 hours
•Wide application : Whether you're installing a valve cover, water pump, or just tightening down some furniture screws, our adhesive solution can be used in various automotive, industrial, and furniture applications.
•Why The Bottle Is Not Full: Threadlocker will solidify in anaerobic conditions, so the bottle is half-full to ensure the threadlocker remains liquid, prevent solidification and hardening.

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$7.99

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Loctite

Loctite 620 442-62040 50ml Retaining Compound, High Temperature, Green Color

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•High Temp
•High Viscosity
•Shear strength of over 3,800 PSI on steed

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$18.00

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Loctite

LOCTITE 680 Automotive Bearing Mount – High Strength, Medium Viscosity, for Relaxed Fits, O.E.M. Specified, Slip Fit Assemblies - 36 ml, 1 Pack

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•OEM-Approved Performance: LOCTITE automotive products are not only OEM-specified but also designed and tested by leading auto manufacturers. Trusted by professionals in engine building and repair worldwide (PN: 2301375)
•Reliable Adhesion: High-strength, medium-viscosity anaerobic adhesive designed specifically for slip-fit assemblies, ensuring a secure bond
•Dependable Replacement: Effectively replaces set screws, clamp rings, snap rings, wheel bearings, idler shafts, and fit bearings for versatile fastening solutions
•Custom Formulation: Offers a selection of viscosity, gap-filling ability, flexibility, and strength characteristics to suit various applications
•User-Friendly Application: Bonds in just 10 minutes at room temperature, sealing joints to prevent leakage and protect against fretting and corrosion

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$25.91

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Loctite

Loctite 21448 Green 638 High Strength Retaining Compound, 50 mL Bottle

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Approvals: Canadian Food Inspection Agency (CFIA)
•Item Package Length: 5.99999999388"
•Item Package Width: 1.99999999796"
•Item Package Height: 1.099999998878"

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$14.83

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Loctite

Loctite 1835201 Green 680 Retaining Compound, 50 mL Bottle

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•High strength, high viscosity room temperature curing adhesive
•Used to join fitted Cylindrical parts
•Allows relaxed machining tolerances, and replaces Clamp Rings, set screws, and snap Rings
•Recommended for retaining shafts, gears, pulleys and similar Cylindrical parts

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$28.51

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Permatex

Permatex 64000 High Temperature Sleeve Retainer, 6 ml, Pack of 1

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Secures slip and press fit assemblies
•Restores fit to worn or out-of-tolerance assemblies
•Prevents surface corrosion
•Adds up to 3,000 PSI holding power
•Suggested Applications: Cylinder sleeves, valve guides, valve seats, bearings and bushings, woodruff keys, liner assemblies

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$9.75

$10.44

-7%

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Loctite

Loctite 37424 640 High Strength Sleeve Retainer Tube - 6 ml

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•OEM-Approved Performance: LOCTITE automotive products are not only OEM-specified but also designed and tested by leading auto manufacturers. Trusted by professionals in engine building and repair worldwide (PN: 487235)
•Strong, Reliable Adhesion: Medium-Temp anaerobic adhesive ensures secure bonding for slip and press-fit assemblies
•Exceptional Strength: Increases holding power by up to 3,200 PSI for enhanced durability and resistance under high-pressure conditions
•Corrosion Protection: Shields surfaces from corrosion while restoring fit to worn or out-of-tolerance assemblies, extending the life of components
•High Heat Resistance: Performs effectively in extreme conditions, withstanding temperatures up to 350°F

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$11.10

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Loctite

680 Retaining Compound 250 mL Bottle, Green

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•For mental parts, loose fitting/ slip fit
•Package Dimensions: 24.1 H x 4.6 L x 9.6 W (centimetres)
•Package Weight: 0.343 kilograms
•Country of Origin : United States

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$159.80

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