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Loctite 21448 Green 638 is a high-strength retaining compound designed for heavy-duty cylindrical assemblies. It cures in 5 minutes, locking parts with up to 0.010" clearance, making it ideal for applications with high dynamic or cyclic loads. Trusted by professionals, this medium-viscosity liquid ensures long-term reliability in demanding repair and industrial settings.
| ASIN | B000O01EV0 |
| Best Sellers Rank | #11,802 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Retaining Compounds |
| Brand | Loctite |
| Brand Name | Loctite |
| Color | Green |
| Compatible Material | Alloy Steel |
| Container Type | Bottle |
| Customer Reviews | 4.7 out of 5 stars 671 Reviews |
| Full Cure Time | 5 Minutes |
| Global Trade Identification Number | 00079340006393, 00079340214484 |
| Included Components | Item |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Weight | 0.18 Pounds |
| Manufacturer | Loctite |
| Material | [Loctite 638 Compound] |
| Material Type | [Loctite 638 Compound] |
| Model | 21448 |
| Other Special Features of the Product | Green |
| Part Number | 21448 |
| Special Feature | Green |
| Specific Uses For Product | Repair |
| UPC | 079340214484 079340006393 |
| Unit Count | 1.69 Fluid Ounces |
| Viscosity Level | Medium |
| Volume | 50 Milliliters |
| Water Resistance Level | Not Water Resistant |
X**X
Works like it should. Made for India market so the label looks odd.
Worked like it should
L**E
This is a gap filling loctite product and is permanent
Arrived in perfect condition.
O**N
Heavy-duty hold for motorcycle components
Used this for my motorcycle mods and it’s been rock solid. The grip strength is serious — once it sets, things aren’t moving. Perfect for press-fit or cylindrical parts. Just make sure alignment is right before it cures, because it’s not forgiving. Definitely worth it for long-term reliability
D**R
Added insurance
Use this every time I install torque converter input shaft seals.
W**.
Buena marca y calidad
Excelente producto
E**R
Shady seller but product is what I wanted so it's good.
Bought a 50ml bottle and received a 250ml bottle, lucky me. Surprised to see it is from India but that also appears to be OK, it is not a counterfeit product. Production and expiration date was taped over, that is shady, but peeled away I see the date is well within its shelf life, it is about 18 months old and good for another 18.
R**L
Strong stuff
Looks like the real deal. Although when you peel the sticker back it reads "For India Only". My 242 bottle had the same and it is working like it should. This 638 is strong stuff.
P**D
Loctite Quality!
Loctite products are as good as it gets. Use them as specified and according to the directions, there will never be a performance issue. Really good stuff across the product line!!
P**R
Seems authentic and great bonding.
Yes - from India. Worked perfect for bonding an old dirt bike (KDX200) flywheel to an abused shaft. Bike has been driven enough to instill confidence in the repair. probably used 2% on this repair.
D**E
This stuff makes a permanent bond.
This version of Loctite is a permanent metal sealant. To remove the nut or bolt you must heat. Great for applications that require a permanent solution (such as rivet nuts).
R**G
Good product for sealing threads
This stuff is amazing. I first learned about it when I was doing a mechanic's apprenticeship. I use it to seal threads permanently, where I don't expect ever to have to take that part off again. I've used it in environments where there is fuel and oil and it never disappoints or leaks for me.
J**T
Loktite vert
Excellent produit obtenu rapidement
R**R
Great product
This worked amazing for putting im a wheel bearing in a worn out hub. Been riding the bike for 2 years like that no issues
Trustpilot
3 weeks ago
1 month ago