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๐ง Lock it tight, last for life โ the proโs choice for metal assemblies!
ESKONKE Retaining Compound Green 638 is a high-strength anaerobic adhesive designed for smooth, unthreaded cylindrical metal assemblies. With a tensile strength of 3625 psi and a full cure time of 24 hours, it fills gaps, prevents loosening, resists corrosion, and evenly distributes mechanical stress. Ideal for professionals seeking durable, precision metal bonding with easy application and long-lasting performance.








| ASIN | B09VHBQ8W3 |
| Best Sellers Rank | #1,363 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Retaining Compounds |
| Brand | ESKONKE |
| Brand Name | ESKONKE |
| Color | Green |
| Compatible Material | Metal |
| Container Type | Bottle |
| Customer Reviews | 4.5 out of 5 stars 130 Reviews |
| Full Cure Time | 24 hours |
| Included Components | Bottle |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Weight | 68 g |
| Manufacturer | ESKONKE |
| Material | Polyethylene glycol 200 dimethacrylate(MPL) 60~65% / Polyethylene glycol monooleate 25~30% |
| Material Type | Polyethylene glycol 200 dimethacrylate(MPL) 60~65% / Polyethylene glycol monooleate 25~30% |
| Model | 638 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Fast Drying, Self Leveling, green retaining 638, loc tite green 638, sleeve lock tight 638 |
| Part Number | RC21-S004R |
| Special Feature | Fast Drying, Self Leveling, green retaining 638, loc tite green 638, sleeve lock tight 638 |
| Specific Uses For Product | Evenly distribute loads and stresses, Fill gaps between components, Isolate oxygen and prolong product life, Lock components to prevent loosening, Prevent component abrasion & corrosion Specific Uses For Product Evenly distribute loads and stresses, Fill gaps between components, Isolate oxygen and prolong product life, Lock components to prevent loosening, Prevent component abrasion & corrosion See more |
| Tensile Strength | 3625 psi |
| UPC | 736561512613 |
| Unit Count | 1.69 Fluid Ounces |
| Volume | 50 ml |
| Water Resistance Level | Water Resistant |
R**Y
It works as intended.
I was rebuilding the spindles on my mower deck. The bearings were not as tight in the housing as they were when new. So I got this bearing retainer to hold them in. I know that it works because when I went to put the spindles on the deck the shafts were in backwards. I thought, no big deal right ,with as easy as it went together I'll just slide the shafts out and turn them around. Wrong, I had to heat them up on both ends before they would come out, with a precession wrench. They cleaned up easily and went back together well. I know this is a Chinese knock off but but it was within my budget to do the job right.
D**K
Great alternative...
Nice alternative to Loctite 638. Grabs quick and holds - had a .007" gap and it filled it, removed wobble, and held tight. Will update later if anything changes, but I intend to use this for many non-threaded fit-ups.
S**R
Did very well, Want the secret of the bottle's spout?
It took a little thought to figure out how the bottle's spout works, The outer white cap pull's straight off. inside the outer cap is the dispensing spout. Just pull that spout upward to dispense the fluid, push down to seal it back up. I needed this for a tool that has 2 studs that were glued into the tool body with a very soft glue. The studs popped out when they were tightened, I tried cleaning the surfaces and gluing them with clear Gorilla Glue and the studs popped out again. This retaining fluid worked great after I re-cleaned the surfaces and clamped them in place for 24 hours.
J**.
4 minutes, really?
The directions say this will cure in 4 minutes and achieve full strength in 24 hours. I thoroughly cleaned the threads with brake cleaner, applied a few drops and assembled. Then waited 8 minutes, twice the time, but I was able to unscrew my part because the product was still wet and uncured. I immediately put it back together and waited 24 hours. Presumably all is ok, but I don't know how strong if I can't trust the directions to be correct about the 4-minute initial cure. I will update this review if the bond fails for whatever reason. EDIT: The one-star reviews complaining about the bottle half full are hilarious. First, you're buying a certain amount of ounces/grams of product so who cares if you get a large bottle as long as you get the correct amount of liquid. Secondly, this adhesive is anaerobic, meaning that it cures when you take away the oxygen, therefore if the container was filled to the top, it would harden in the bottle. The listing clearly says that it must be shipped half filled with air in the container to prevent it from curing in the bottle. EDIT 2: Failed after only a few hours. I do not believe my parts exceeded the rated 482 F of heat. I cleaned the threads and tried again.
M**R
Essential to certain engine build specifications - Do Not Substitute anything else.
What I like is it's an excellent product and exactly specified for my mechanical modifications. What I didn't like is it took about two weeks to get this. In that time, I had parts arrive from Germany to Alaska in three days and other parts from all over the US in a no more than 5 days. This really held up my build which I'm backed up against winter coming. We need Einstein Express. "When it absolutely has to be here three days ago!" :-)
N**K
Works great
Great product, quick shipping
C**O
Works as advertised
Yes bottle arrives 1/2 full. But there is a valid reason. This product cures with lack of air. If bottle were full to top then product would harden. Filling bottle 1/2 way allows sufficient air inside bottle to prevent curing of product. You are not getting cheated. The bottle contains 50g of retaining compound.
S**R
Received previously used product.
1. The product was previously opened and apparently used 2. Expect thee was insufficient space to allow the product to penetrate the gap. Presume this is not an indication of product quality.
Trustpilot
1 day ago
1 month ago