Features:

  • Medium to high strength threadlocker for general-purpose applications
  • Prevents loosening due to vibration
  • Removable with hand tools for easy disassembly
  • Especially well-suited for 6mm to 20mm (1/4" to 3/4") fasteners that have a slight oil film
  • Suggested Applications: Rocker studs, rocker adjustment bolts and bolts on valve and cam covers, oil pans, disc brake calipers, intakes, alternators, and pulley assemblies
Good Stuff

Assembling outdoor gate mechanisms and used it on bolts from 5/16 to 5/8. Had to dismount a few a couple weeks later and wasn’t difficult. I could feel the resistance from the cured sealer. Followed directions and proof was in the results. Cleaned the removed bolts, re-applied sealer and they went back with no issues. Confident it works well.

Tight hold, that can still be wrenched off!

When you want something to not vibrate off but still able to wrench it off, this is your stuff. Same hold, at a cheaper price compared some other name brands. I've never had a problem with Permatex products and will continue to buy them in the future. If you want this stuff to hold and not get everywhere when working with installing bolts vertically, look into their gel based threadlocker. Good stuff!

Worked for my bicycle's loose crankarm

EDIT (March 2010): It's still holding tight after 1.5 years! ---- Brief summary: It's been working great for over 3 months on my bike. Longer version: The left crankarm on my 20+ year old bicycle was coming loose every month or so. The local bike shop said that there was nothing I could do short of tightening it and that the problem would get worse until I replaced the crankarm (a >$100 fix and lots of fun trying to locate an overpriced unused vintage part on auction sites). I researched the problem online and came across a few mentions of people using Loctite threadlocker to fix the problem. I decided to get the Loctite 243 since it is resistant to grease. Unfortunately, the local shops only carried Loctite 242 (not oil resistant). Amazon carries Loctite 243, but it is through a third party vendor which charges as much as the item costs for shipping. Fortunately, I came across this Permatex threadlocker, which is also grease resistant (#24300) and is offered with free shipping. My impression is that this is the same exact product as the Loctite 243, but rebranded. Over 3 months ago, I removed my crankarm and wiped the gunk off both the male and female threads. I applied Permatex to the male threads and screwed the crankarm back in. I let it sit undisturbed for 2 days to allow the stuff to fully cure. I have been riding my bike almost everyday since then (about 1000 total miles), but the crankarm has not come loose. I'm so impressed by this product that I decided to use it on other screws that would periodically come loose (like on my rear rack). Everything has stayed in place. If you're unfamiliar with these thread locking compounds, be aware that there are several versions of the Permatex and Loctite. The blue stuff is of medium strength; one should be able to break the seal using the force from hand tools. There's a regular and an oil-resistant version of the blue stuff (best to go with the oil-resistant if you have a choice). If you need something stronger, there's a red version. You'll need to heat that stuff with a blow torch to break the seal. A low strength purple version is also available.

Five Stars

Worked as expected. Worked as expected. In case you've never changed your brake pads & rotors and aren't sure where to use this threadlocker, visit my YouTube channel...… beachtroll I have a video on how/where to use this. Thanks!

CYA

Instead of over tightening like Capt. Caveman, use a couple of dabs of this and torque to specs as applicable. A little insurance, especially in high vibration conditions.

simply worth it

I’ve been using this product for years in my motorcycle and cars. For the price, it’s worth it because I will be using this for years. It does serve its purpose.

It’s thread locker so...

I exclusively use this for gunsmith work and it holds while still being able to remove the fasteners when needed. I appreciate the upright bottle to cut back on mess.

Good thread locker.

Great for low torque applications, such as aluminum, to keep bolts from loosening. Can be removed again easy, no heat required.

Stops bolts vibrating loose

Used on bolts that were torqued at a low setting , good assurance to help them from vibrating loose.

One Of My Go To

I use the Permatex 24300 between scopes and rings, and base rails and the action.

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