Permatex Vs. Loctite Sleeve Retainer: Both offer strong anaerobic adhesion to resist vibration and corrosion. But which one will hold up best in your specific application? I took a good look under the hood to compare their viscosity, cure speed, temperature resistance, strength, and chemical resistance. Here’s what I found:
But Loctite offers higher shear strength and torque resistance for demanding mechanical loads. Its activator option allows an even faster cure if needed.
Permatex Vs. Loctite Sleeve Retainer: What’s The Difference?
When it comes to heat, Permatex rules – it withstands temperatures up to 400°F, much higher than Loctite’s 200°C limit.
Both resist oils, gasoline, and other chemicals. But Permatex has the edge on max gap fill at 0.007 inches.
So if you need to retain parts fast or at really high temps, reach for Permatex. But for maximum strength and torque resistance, Loctite may be the sleekest choice. Read on for a full run-down of their specs so you can pick the perfect sleeve retainer for your application.
My Hands-on Test of Loctite Sleeve Retainer
✅Pros of Permatex Sleeve Retainer
Another great experience I had was when I used Loctite on a lawn mower valve guide that had slipped out. I applied the Loctite and used a punch to tap around it, making it tighter. I’ve mowed several times since then, and it’s still holding strong.
Crushed Dowel Pin
Bummer about that crushed dowel pin in the marine engine. I was hoping it got messed up when they were putting it together and I could just swap in a new dowel, but turns out it happened before they finished machining it. One of the bores is outta round by like .0015 inches – more than I’m comfortable with, so it’ll need some align honing. The crankshaft and gear for the VE build did not want to weld without cracking so I ended up milling a full keyway and reinstalling the gear with this Loctite sleeve retainer. I always take these things apart to clean and check ’em out. Those rocker assemblies were filled with metal shavings, gnarly!
Repair the Differential Carrier Bearings
I also used it in my Chevrolet pickup with damaged differential housing. Instead of buying 630, the loctite 640 equivalent, which was out of the question, I used Loctite #640 to repair the differential carrier bearings.
Bicycle Press-Fit Bearings
Another fantastic use of Loctite was when I had creaky BB30 bottom bracket clicking issues on my bike. Following Specialized’s instructions, I used Loctite #640 green sleeve retainer between the press-fit bearings and the bearing shell. It completely solved the problem, and now my bike rides smoothly without any annoying sounds.
In terms of application, Loctite is a great product that lives up to its claims. It’s a translucent green liquid that is strong yet light enough to wick into tiny cracks. It dries relatively clearly and is barely noticeable.
❌Cons of Permatex Sleeve Retainer
It starts bonding within minutes, but the total cure time is about a day.
FAQ of Loctite 640 High Strength Sleeve Retainer
Q: Can this Loctite sleeve retainer withstand exposure to hydraulic oil at low temperatures?
A: Once fully cured for at least 24 hours, LOCTITE 640 demonstrates resistance to most hydraulic fluids.
Q: Is it suitable for
bonding two large aluminum pieces together?
A: No, this Loctite sleeve retainer is specifically designed for tight clearances in confined spaces that experience high heat.
Q: Can I use this Loctite sleeve retainer to secure a Crankshaft Oil Seal in an aluminum lawn mower engine block?
A: Before proceeding, I recommend consulting the manufacturer for their recommended repair solution. In the case of bonding aluminum, you will need to use the LOCTITE SF 7649 primer in conjunction with LOCTITE 640. Additionally, consider the operating temperature as LOCTITE 640 is rated up to 400F. It’s important to note that once cured, this is a permanent assembly that requires heating to 500F for future maintenance removal. However, all LOCTITE anaerobics are compatible with oils once fully cured after 24 hours.
Q: Has anyone successfully used this Loctite sleeve retainer to repair a loose connection between a windshield wiper blade and a wiper arm?
A: While I’m not entirely sure about the specific bonding requirement, it’s worth mentioning that this Loctite sleeve retainer is not a glue. It is designed to allow the separation of joined items with the application of heat. If the wiper blade and arm connection involve metal components joined in a cup and receiver fashion, it may work. However, if you intend to bond rubber to a metal arm, it would be more suitable to use a silicone adhesive.
Q: Will this Loctite sleeve retainer effectively seal the input shaft to the drum of a 4L60E transmission?
A: Yes, this Loctite sleeve retainer is suitable for sealing the input shaft to the drum of a 4L60E transmission.
Q: I have a 25mm shaft that needs to fit into a 1″ diameter bore with a play of approximately 0.016″. Is this Loctite sleeve retainer suitable?
A: Since the clearance is large, it is recommended to use sealant gaps up to 0.004″ in diameter. For this application, LOCTITE 620 (for gaps up to 0.015″) or LOCTITE 640 (for gaps up to 0.020″) would be appropriate. If one of the parts is an active metal like steel or brass, no primer is required. However, if it involves an inactive metal, a primer like SF 7649 or SF 7471 should be applied to aid in curing. Ensure the parts are thoroughly cleaned with Acetone or a degreaser like SF 7611 and allowed to dry before applying the adhesive. If a primer is needed, apply it after the cleaning process and allow it to dry.
Q: I want to prevent a stainless rod from backing out of an aluminum hub. Will this Loctite sleeve retainer adhere or just fill loose fits?
A: We used this Loctite sleeve retainer to affix a valve guide in a Briggs and Stratton motor on a zero-turn mower back in 2014, and it is still in use today without any issues. It is designed as an adhesive rather than just a filler, and from personal experience, it required significant filing with a sharp file to remove once it had been set.
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Q: Can this Loctite sleeve retainer seal leakage around a spark plug heli coil in a car cylinder head?
A: Yes, it can seal the leakage, but it is important to clean the area and apply the product to the heli coil before installation to ensure a proper seal. If the heli coil is already installed, it may not effectively seal the leakage.
Q: I’m considering using Bearing Buddies on my jet ski trailer, but I’ve heard complaints of them falling off during travel. Can this Loctite sleeve retainer prevent that problem?
A: Using this Loctite sleeve retainer would indeed help prevent the issue. I recommend using the SF 7649 primer in conjunction with LOCTITE 640 for curing. However, please note that LOCTITE 640 is a permanent high-strength adhesive, and removing the worn bearing after applying it would require heating up to 500F. For bearing applications, it might be more suitable to use a removable product like LOCTITE 641.
My Hands-on Test of Permatex 64000 High Temp Sleeve Retainer
Fortunately, it cures quite slowly, giving me plenty of time for alignment. It has proven to be reliable, and the drive dogs have held on tightly. Removing it requires heating it up to around 400 degrees (F), which is not something you’d want to do in a crematorium, but for everything else, it works great.
Before applying the sleeve retainer, I made sure to clean the parts thoroughly with acetone or mineral spirits to ensure there was no oil or contamination. The Sleeve Retainer goes a long way, and it’s a good investment for securing various parts.
Tractor’s Rock Shaft
When I rebuilt the sleeves on my tractor’s rock shaft, I initially thought the regular blue thread locker (Loctite Blue Vs. Permatex Blue) would suffice. However, it turned out that it didn’t work at all for that purpose. After reading the directions and using Permatex Sleeve Retainer, the sleeves haven’t moved at all, even when loaded with implements. I learned the hard way that using the wrong thread compound resulted in the sleeves coming loose when I pushed grease into the space. So, the moral of the story is to buy the right compound and get it right the first time. Permatex Sleeve Retainer is an affordable solution that saves time and prevents costly mistakes.
Easy to Use
I found the Permatex Sleeve Retainer easy to use, and it provided peace of mind for my bearing buddies. I applied it to bond a Teflon stuffing liner to my driver shaft stuffing tube in a scale RC boat. With my drive shaft spinning at 35K RPM, I needed to ensure a strong bond that could withstand the high temperatures generated. So far, Permatex 64000 has held up at temperatures of around 175 degrees, and it is also waterproof. It has proven to be a reliable and effective solution for my needs.
As an alternative to Locktite 620, I’ve used Permatex Sleeve Retainer for gas key sealant on my gas key jobs, and it has always done the job for me. If you don’t require a large quantity of the more expensive Locktite 620 bottles, Permatex Sleeve Retainer is a cost-effective option that gets the job done.
I had to use Permatex Sleeve Retainer for pressing in new control arm bushings on a Cobalt SS Turbo. It was challenging to find suitable options online or locally, but this product worked well for the task. It has a similar consistency and smell to threadlocker, and it’s not designed to be a high-temperature adhesive. Instead, it fills in the microscopic gaps during a press-fit installation, providing additional resistance to prevent the object from coming loose.
Similar Consistency and Smell to Threadlocker
Using Sleeve Retainer during the installation process of Grease Buddy Bearing Caps has proven to be a smart choice. One buyer recommended it after experiencing issues with losing caps, and it acts as a non-threaded lock tight solution. I applied it to my new set of trailer Bearing Buddies, and they are still securely in place. It works effectively and adds peace of mind, ensuring I won’t have any issues in the future.
If you’re using Permatex Sleeve Retainer on greasable caps, it’s a great product that offers extra insurance. It ensures that your cap stays securely in place, protecting your bearings. Investing in this inexpensive product provides peace of mind, preventing potential issues and breakdowns on the road.
I followed the instructions precisely when using Permatex Sleeve Retainer on a 6.75 HP Briggs & Stratton engine inlet valve seat. However, after only two hours, it failed to hold the valve seat in place. As a professional mechanic, I would not recommend this product for use on valve seats.
FAQ of Permatex Sleeve Retainer
Q: Is it possible to use Permatex Sleeve Retainer to secure the JT33 taper mount on a drill press?
A: It is likely that Permatex Sleeve Retainer can be utilized for securing the JT33 taper mount on a drill press. Personally, I have employed Permatex Sleeve Retainer to effectively secure a hub to a 10 hp 2 cycle engine, and it has been holding up well so far.
Q: Can this be applied to anodized aluminum?
A: Absolutely, it can be used on anodized aluminum.
Q: Would this be suitable for securing an inserted Helicoil?
A: Yes, it would work. However, I would strongly advise against it. It is not recommended to use any substance on helicoils. If you are concerned about it spinning, consider using a locking helicoil.
Q: Is Permatex Sleeve Retainer appropriate for
sealing yoke splines on a transfer case, without locking them, but to prevent gear oil from leaking past the splines?
A: Absolutely not! Permatex Sleeve Retainer is an adhesive specifically designed for high temperatures. It is an anaerobic adhesive that is used to secure slip and press fit assemblies, as well as restore the fit to worn or out-of-tolerance assemblies. Please note that it is not meant for sealing purposes.
Q: Is this the same as Loctite 648?
A: Loctite 648 is similar but not identical to 648, you can see my article about loctite 638 648 difference. The upper-level temperature rating for Loctite 648 is 300 degrees with a shear strength of 3900 psi. On the other hand, Permatex 64000 High Temperature Sleeve Retainer has a maximum temperature rating of 400 degrees with a shear strength of 3000 psi.
Q: Can I use this on an engine oil seal that is fitted into a cylindrical hole? The oil seal keeps moving side to side, causing a leak.
A: I have used it for a metal sleeve. It is possible to prevent the rotation of the metal oil seal, but it may not be effective in preventing movement from side to side. However, its effectiveness for your specific scenario is questionable.
Q: What is the recommended preparation before using the sleeve retainer?
A: The basic procedure is similar to using lock-tight for metal without threads. Clean the surface and apply the sleeve retainer.
Q: How does it compare to Loctite 620?
A: Permatex Sleeve Retainer is essentially Permatex’s version of Loctite 620. I have personally used both with success, but the 64000 version is usually more cost-effective.
Q: Is this an equivalent to Loctite 635?
A: I have used it as a substitute for Loctite 620, but I am not certain about the specific differences between the two. However, it worked exceptionally well for valve seals.
Q: Will Permatex Sleeve Retainer work to keep a bearing sleeve in place on the end of a crankshaft?
A: That is exactly what I used it for, and it has been holding up and working effectively for a year and a half now.
Q: Where is Permatex Sleeve Retainer manufactured?
A: Most Permatex labels state that it is “assembled in the USA of US and global materials.” Permatex is a brand owned by ITW Inc., based in Ohio.
Q: If I use the 64000 to install bearing buddies, will I be able to remove them in the future?
A: The temperature range for Permatex Sleeve Retainer is up to 400°F (204°C). Yes, you can remove the bearing buddies at a later date; however, you may need to heat the hub with a heat gun to a temperature above 400°F. This heating process is not uncommon when dealing with bearings and hubs, and a temperature of 500°F will not harm the hub.
Q: Will Permatex Sleeve Retainer secure a threaded stud with poor threads?
A: It might, but your best option would be to clean up the threads or purchase a stud with better threads. It is not worth the additional headaches and extra work to save a few bucks on a new stud.
Q: The product claims to be high temperature resistant. At what temperature does it stop working?
A: Permatex Sleeve Retainer is effective up to 400°F. If you need to disassemble it, you would need to heat the assembly to a temperature above 500°F.