Whats the operating temp of loctite 638 tm.....we have hair crack or say void in the mig-welded metal part....resulting into water sippage...

Upto 180 deg Celsius after full cure. But shouldn't be used to fill hair crack. Use Loctite 290 instead for hair cracks.

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Loctite 638 Retaining Compound 50ml | High-Strength Retainer | High Temperature & Oil Resistant | Fast Fixture Time | High Viscosity | Bonds Shafts, Gears & Pulleys

Product ID: 227407182

Details

Brand
Loctite
Item Form
Liquid
Material
Methacrylate
Special Feature
durable
Specific Uses For Product
durable

🔥High-temp resistant

⏱️Fast fixture time

🛠️High viscosity for strong bonds

B/.40

Duties & taxes included

In stock

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Description

🔧 Lock it down with Loctite 638 — where strength meets speed!

RAPID FIXATION POWER - Secures shafts, gears, and pulleys in record time—no downtime, just uptime.
PRECISION HIGH VISCOSITY - Engineered for a thick, reliable hold that resists water and oil infiltration.
TRUSTED BY PROFESSIONALS - Ranked top 100 in universal adhesives with a 4.2-star rating—join the elite users.
UNMATCHED HEAT ENDURANCE - Withstands extreme temperatures to keep your machinery running flawlessly.
INDUSTRIAL GRADE DURABILITY - Crafted from premium methacrylate ester for long-lasting, oil-resistant bonds.

Loctite 638 Retaining Compound is a high-strength, high-viscosity adhesive designed for bonding metal shafts, gears, and pulleys. It offers fast fixture times, exceptional resistance to high temperatures and oils, and durable, waterproof performance—making it a top choice for industrial and professional applications.

Specifications

ASIN	B0074NAX8A
Best Sellers Rank	#2,819 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #89 in Universal Adhesives
Brand	Loctite
Brand Name	Loctite
Colour	Red
Compatible Material	Metal
Container Type	Bottle
Country of Publication	India
Customer Reviews	4.2 out of 5 stars 81 Reviews
Importer Contact Information	Henkel Adhesives Technologies India Private Limited Plot No. D4/1, Kurkumbh Daundh MIDC Pune - 413 802 Maharashtra, India
Included Components	1
Item Form	Liquid
Item Package Quantity	1
Item Type Name	Adhesive
Item Weight	80 Grams
Manufacturer	Henkel Adhesives Technologies India Private Limited Plot No. D4/1, Kurkumbh Daundh MIDC Pune - 413 802 Maharashtra, India, Loctite
Manufacturer Contact Information	Henkel Adhesives Technologies India Private Limited Plot No. D4/1, Kurkumbh Daundh MIDC Pune - 413 802 Maharashtra, India
Manufacturer Part Number	LOCTITE 638-50ml
Material	Methacrylate Ester
Material Type	Methacrylate Ester
Model	LOCTITE 638-50ml
Number of Pieces	1
Other Special Features of the Product	durable
Packer Contact Information	Henkel Adhesives Technologies India Private Limited Plot No. D4/1, Kurkumbh Daundh MIDC Pune - 413 802 Maharashtra, India
Special Feature	durable
Specific Uses For Product	durable
UPC	079340214484
Unit Count	50 Milliliters
Viscosity Level	High
Volume	50 Millilitres
Water Resistance Level	Waterproof

Reviews

S**Y

Good

Excellent product

23.04.2026

S**N

Loctite 638

Good

2.02.2026

S**P

Excellent product

This does it work perfectly. I wanted it to seal the bottom bracket of my carbon frame cycle and it worked..

2.02.2025

P**L

Loctile 638

It's a excellent bearing retainer

28.12.2020

V**N

Good Product

31.07.2022

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