LOCTITE 640 High-Strength Sleeve Retainer, High-Temperature, High-Stength, Anaerobic Adhesive, For Large Diameter Components, Active Metals | Green, 6 ml Tube (PN: 487235)

(318 Reviews)

Price
$10.59

Quantity
(10000 available )

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47 Ratings
40
5
0
1
1
Reviews
  • ConcreteGuy

    Greater than one week

    This worked really well to secure my dipstick tube into the engine block.

  • Steven & Deborah Ferguson

    > 3 day

    When you need metal locking adhesive this is it.

  • Kenneth M. Debusk II

    > 3 day

    Use fresh, dont leave on the shelve too long. Works great!

  • Anthony R.

    10-06-2025

    I used this to sleeve a steel tube, and then turn it down. It held on like weld. Just follow the directions.

  • Umar A Hassan

    > 3 day

    It is the standard for a reason

  • Mepeters3

    > 3 day

    I bought this after reading forum posts about staked vs glued ejectors on 1911s. Apparently this is what the pros use to “glue” ejectors. I had a glued ejector from the factory that came loose after 14 years and didn’t feel like having my ejector staked as it would have made me send my frame back for machine work. This worked perfect to glue my ejector and has held solid for a long time.

  • jgc

    > 3 day

    Used this to repair a loose bearing race on a 78 yr old truck. Alternative was to find a new spindle. This worked great!

  • Lee W.

    > 3 day

    Tried to use to secure a bushing in an output extension housing of a truck transmission. Old bushing was spinning in its bore. Supposed to be a press fit. Researched this problem and discovered this product. Followed directions. First cleaned and degreased housing and bushing mating surfaces with BrakeClean. Then applied the Loctite to both surfaces and installed the bushing with a twisting motion. Instructions state the product will set up in 1hr and fully cure after 24hrs. I had the assembly in my house at 72* and after 24hrs product was just as wet as when I installed it. Removed bushing and recleaned , not sure what to do now.

  • rick davidson

    Greater than one week

    Like most loctite products, it worked like advertised, not cheap, but not Cheap..

  • oldamature

    14-06-2025

    Wanted to clean of old bandsaw’s rubber tire the “easy” way. I did but in the process enlarged the bandsaw’s bearing hole. The loctite product says it can fill up some of the space between the bearing and bearing hole. Well it did and 5 years have passed and the bearing is still in there.

LOCTITE 640 is a high-temperature anaerobic adhesive that secures slip and press fit assemblies. Adds up to 3,000 psi holding power. Restores fit to worn or out-of-tolerance assemblies. Prevents surface corrosion. Works to 400°F (204°C).

High strength, methacrylate ester-based retaining compound that is slow curing; ideal for large diameter components and active metals such as brass.

LOCTITE 640 is a green, anaerobic, low viscosity, methacrylate ester-based retaining compound ideal for parts requiring a longer positioning time. Fixturing time on steel is 2 hours. Also used for active metals such as brass. This is a high-strength product with good temperature resistance. Max. diametrical clearance is 0.1 mm and service temperature is -55 to +175ºC. Fluorescence allows product presence to be monitored.

LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Engines of nearly every professional race car are assembled and maintained with LOCTITE brand adhesives, sealants, gasket makers, and coatings. Whether gasoline or diesel, from bolts and gaskets to cooling lines and core plugs, Henkel products are used to seal, secure, and repair vehicle components.

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