Red vs Blue Loctite

A small tube of Loctite is an invaluable part of any good tool kit. You’re bound to come across a bolt or nut occasionally that you want to make absolutely sure that it won’t rattle loose.
*Amazon affiliate links:
Red (permanent) Loctite: amzn.to/2MwUQdQ
Blue (removable) Loctite: amzn.to/39dlfr1
Disclaimer: Zach Fields may earn an affiliate commission when you buy through the links here.

[@ZachFields]

*Amazon affiliate links: Red (permanent) Loctite: amzn.to/2EZznpR Blue (removable) Loctite: amzn.to/366h12v Disclaimer: Zach Fields may earn an affiliate commission when you buy through the links here.

[@TheMinecraftACMan]

Just a heads up, Red Loctite can be removed. You just have to heat it to 550 degrees Fahrenheit first.

[@shaneglover2719]

Blue is good for almost any job. If you need red you need to make sure you won't be taking it off again. Red is a beast. I only use blue around the house.

[@clintonlied]

Comes apart super easy with barely any heat applied.

[@ozziejim8472]

As a Harley owner, loctite is my friend. Lol

[@Troubledboy88]

Cuz Harley’s are trash

[@OKCOPRODUCTIONS]

As a ram and Ford owner it is my friend as well

[@rodolfosabater7781]

I used loctite too for locking the crankcase of my indian a while ago I covered the entire thread of the 🔩 bolt hahaha..

[@robbingrobber]

Video starts at 2:08

[@vladisergeiev7278]

My favorite tool is a butane torch. I used loctite red on a shift knob and permanently welded it to the shifter linkage. This was a mistake. No amount of torque that I could manually supply would remove it, and more torque would likely damage the linkage. Thankfully loctite has a secret weakness. I heated up the shifter linkage near the shift knob with the torch and sure enough, was able to unscrew it. That's my story... don't make the same mistake I did.

[@danielm593]

First time using Loctite… Thank you for the clarity!

[@alanmacphee9302]

Thank you for this video! It was the perfect length, very informative, and well-produced.

[@microcolonel]

Red seems just the thing for keeping the optic plate on your Glock, seeing as blue doesn't do.

[@oogiemaster]

If you have to use red instead of blue, use a fraction o the amount, like 10%.

[@samsen3965]

Is this why in Scotland they only sell Red?!!

[@paulyyy09]

@@samsen3965 screwfix does blue

[@cdav28]

Spot on information and well explained! 👍

[@michaelsih2490]

Thanks for the clarification!

[@ZachFields]

My pleasure! Thanks for watching. :)

[@justin456]

Red threadlocker is permanent. Milwaukee 1" impact "hold my beer"

[@rangerat4200]

Hahahaha

[@MinkFranchise]

Str8 up!

[@lionking4910]

🤣 that's a fact

[@DownHillgamer]

Lmao ohyea that impact is no joke

[@gumballer133]

I just bought the 1in impact, pretty amazing for a cordless. Only the worst stuff do we still need the 1in Air gun for.

[@jojorobino5312]

I use blue locktite on all my knives. And if I ever need to take a knife apart its actually possible to loosen a screw with blue while keeping everything secure when I need it to be.

[@mpwmu9041]

Thanks for the info. Came in handy.

[@MrJmawiseman]

Good advice. I have a bolt on the trigger guard of my air rifle that keeps coming loose. I may give the blue a try👍🏻

[@ELMS]

Very clear and concise. Thanks.

[@rj863]

Very helpful. Thank you.

[@kociuba84]

The video and no comments thus far mention a key element to using threadlocker: there must be a complete absence of air for it to work i.e. it cures anaerobically when in contact with metal.

[@MadMax-iz4vm]

love to see the milwaukee tools in the background. Good on ya mate.. from N.Z.

[@Steve992.1]

Im planning to use this on the lock nut on my bicycle crank... I got the red one because i believe thats going to need the strongest option.

[@joshoconnor9666]

I used some red thread lock on a bolt that I later removed very easily. I put a good amount of it on there too.

[@QuattroYT4]

Simple video (Smooth like butter) GREAT VIDEO !

[@jorelldye4346]

Thank you! Clearly articulated, well produced. Subbed.

[@jhh0419]

Thank you.

[@XeRo333]

I read a review about the Blue Loctite liquid and how someone was using it to keep drums in tune longer then I came across this video

[@ZachFields]

Oh, cool. I'd never thought of the uses in the musical world. That's great!

[@snap_fit8686]

Thanks man..

[@olivepressdesign]

Great video. Thanks for sharing. So if I use blue loctite, and then I eventually need to remove the screw temporarily, when I screw it back on, do I just reapply?

[@ZachFields]

@olivepressdesign yep, that’s right 👌🏼

[@robmbaboy1]

You'd need to get off the old loctite, which is easy enough

[@arbjful]

I am planning to use both Blue and Red for an application I made. Red for sub assemblies that won't be dismantled at all, and blue for the serviceable parts. Can this be used on aluminum?? How about powder coated aluminum?? Do I need to scrape of the paint first?

[@bthompson1767]

Thank you

[@ZachFields]

You're welcome!

[@shreefabricatorsjalna4690]

CAN WE USE LOCTITE TO FASTEN STEEL BOLT ON WOODEN INTERNAL THREADS? HOW TO HAVE PERFECT NON LOOSING THREAD LOCKER WHILE BOLT IS OF STEEL AND INTERNAL THREADS ARE OF WOOD?

[@mareerogers7663]

Affixing a removable bolt with no nut holds but undoing it can be permanent , if blue is removable but not permanent hold shouldn't red be replaced for antiseize cause at times corrosion resistant braking will eat the product and so the bolts entirely lubricated won't rust maybe or collect road grime remember as I did for bearings Lubis as front as the part your assembly is requiring to change not actually backsides to the assembled lubricated area some times it shouldn't be done if you can't see that corrosion protection then apply it on the front so to speak it mite enter that by curing time so nlgi grades is a lubricant that if lubricates will wash off , try to do front wheel drives it's going to be sure less on the back but always inspect by looking and allow curing time so the products are carefully while they split wear off or become intermittent

[@lumpylumpy3931]

Thanks bud

[@diecastnorbz]

I have a toy question. Would you suggest the blue threadlocker for a plastic to metal screw connection? I don’t know if the chemicals in this lock will melt the plastic in my project. Can you help? Thanks for any advice.

[@VladOnEarth]

0:01 can't unsee this now

[@ameliabuns4058]

i got the low strengh for my 3d printer and wow this does almost nothing, and it almost never dries on some of my parts. it almost does nothing to my black screws. i'm scared the blue is too strong for my use. mine was a lot more liquid tho. it says loctite 222. i'm worried it's a fake? hmmm

[@jackarmstrong46]

Your using 242 loctite which is not oil tolerant and should only be used on new or clean fastners Anything with oil or contamination should use 243

[@ozziejim8472]

Gold mate, thanks!

[@pikapikacool]

Can the blue loctite used on plastic? Like screw to plastic, because most people says it would eat or break the plastic, making it cracked and stripped the hole..

[@kentharris7427]

Can I use blue locktite to temporally glue 2 pieces of aluminum together? I need to keep a Flange shaft Coupling together on a disk until I drill 4 holes into the disk.

[@pepsiccolausa8857]

Apply heat on red to remove

[@oigemer1]

can i use the blue loctite to tighten the srew threads of the motor of the propeler for dji mini 2.??

[@ripp3rjak934]

Honestly. Locktite for bikes and Ebike hub motors is a lifesaver mang. I’m glad I got the blue. Except I’m too scared to try the red. Might not be able to remove that nut or bolt lmao

[@pandaadventureunboxing6855]

If i use loctite on my Motorcycles when the nut or bolt is always on hot surface like the nut on any Scooters drive face it connected to connecting rod and thats really hot ........ What loctite should i use ??? High strength or medium strength ???

[@Labgorilla]

Man. Thanks. What about temperature resistance? I’m assembling a motorbike engine and need to ensure the loctite will not be affected by high engine temps.

[@ZachFields]

Loctite 243 (best general use medium loctite) is good to 360*F.

[@jeanerojp3944]

Gracias por compartir.

[@its.Andy1]

So I’m assuming neither the red or blue loctite on exhaust manifold bolts would work because of the extreme heat? If heat is it’s weakness if you ever wanna remove the nut?

[@mohamedelkholy9793]

What if I used the thread sealant locktite 577 instead of threadlocker locktite by mistake ? will it do the job ?

[@quarans08]

I had to cut the top cap thing off, it didn’t come off quickly for me. Normal?

[@samirmalhotra6094]

Hi Kindly tell if I can tighten or untighten my tuning pegs on a metal harp for tuning(which has to be done again & again) after I have applied & cured with red 271 Loctite only.(Playing strings at tuning pegs have quite a tension though) Or is it kind of welded. Txs

[@TheRoman1]

Blue is mechanical Red requires torch heat for removal

[@Jackson.T]

How long will blue loctite last? Will it wear out?

[@sistercalhoun4444]

What should I use on Calaytic converter screws red or blue ?

[@madeinmadein1824]

Is it necessary to shake it before use

[@dougdobbs]

No mention of Wranglerstar and the Locktite gag? :)

[@ZachFields]

Ha! How did I forget to mention it!?!? 😁

[@JustSimplyBrandon]

Why not just use a two-part epoxy like JB Weld Original as a threadlocker?

[@ZachFields]

In a pinch, I would definitely try it. Just know that it would be a permanent application.

[@watchmanexpert]

red loctite must on wheel adapter spacer

[@bthompson1767]

Wouldn't use spacers

[@watchmanexpert]

B T why ?

[@Koen75NL]

Spacers are for girls

[@verveblack]

a good practice as you're on youtube influencing people is to follow safety instructions while using the product

[@clintonlied]

Ok, Mother.

[@Tahsin_Hussain]

2:10 BLUE if Temporary & Removable. RED is permanent. You should say this tbthe Beginning of the video.

[@rwei85able]

Nice 👍

[@mannycaballero4370]

Can I use blue or red loctite with PTFE Thread seal tape?.

[@ZachFields]

Nope, not really. PTFE is meant to lubricate the threads and loctite would not stick to it. Usually ptfe or Teflon tape is used on pipe fittings and they don't typically have problems vibrating loose.

[@mannycaballero4370]

@@ZachFields Gracias Zach.

[@clee027]

I use red on cheap furniture. 🤣🤣🤣

[@tommybool1000]

Make sure you shake it

[@danielpotter8957]

Will blue be ok on caliper bolts?

[@ZachFields]

Blue should work just fine. TBH though, I've never heard of caliper bolts working loose even without loctite. It wouldn't hurt anything though.

[@baddest_bitch]

@@ZachFields You have now. To be fair I don't think they were torqued properly in the first place.

[@LMBC6Brian]

I work at jiffy lube and I always red loctite the oil drain plugs. For the next guy.

[@jinxgtr]

not true red is not permanent Green is the strongest but loctite is not permition from weakest to strongest purple,blue,red,green.

[@ZachFields]

Based on my understanding of their website (link below) and other Loctite liturature, green is for preassembled fasteners and is considered "medium-to-high-strength" whereas purple, blue, and red are low, medium, and high strength respectively. www.henkel-adhesives.com/us/en/insights/all-insights/blog/difference-between-threadlockers.html#:~:text=LOCTITE%C2%AE%20Green%20Threadlocker%20is,with%20heat%20and%20hand%20tools.

[@olenaerhardt7725]

Pls do you know which one is better for inner tie rod: Loctite 271 or 272? In one film on utube, he said 272, but on the 271 it is said for rods up to 3/4 in in D. That is a diameter on the car in utube film and on my car. On 272 it is said up to 1-1/2". I would appreciate any opinion on this matter.

[@ZachFields]

As far as I can tell, either would work just fine. Both are red permanent loctite.

[@olenaerhardt7725]

@@ZachFields Thank you. Probably I'll go with a bit weaker 271, bcs some people apply Blue, some just none and torque it. I think still better to apply some threadlocker, because it prevents any voids with air and moisture, so less rust. Though it is harder to remove it in the case of necessity, but more safe. Actually the old inner rod I removed just with Blast PB Penetrate Catalyst with no heat, and there was some red mark on the thread of the rod (though on that end which goes towards the ball, like 4-5 thread lines were covered. You would expect the first threads (end of the rod, which goes to the steering rack) to be covered, and not the last ones. So can't say for sure if that trace was from any red threadlocker. The car was in dealership and they stated they did change the both rods). From another side to remove a part using heat sounds like an interesting project.

[@dr.danielkester9313]

I refuse to buy Loctite brand. They can’t seem to be able to tell the difference between red and blue. Now I’m a permatex guy.

[@imtopher61]

Duct tape & WD-40

[@SandraWantsCoke]

I'm gonna switch the content of blue and red in the store muhahahahAHAAHAHAH

[@TheMsilos]

I hate that the blue is red and red is blue

[@hawghawg381]

I use blue on my darts.

[@censortube7160]

Heat will make red removable..😉

[@donkeypox1943]

What loctite should I use on my Secks Swing? My boyfriend said blue because he is a democrat and it will resist the oil lubes we use in our secks room. I am a big guy and don't want to crush him if something breaks on the swing.

[@dennisthemenace5150]

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