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 resistance

⏱️Fast fixture time

🛠️High viscosity for strong bonds

B/.36

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Description

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

RAPID FIXATION POWER - Sets quickly so you can move forward without downtime—because time is money.
OIL WATER RESISTANT - Engineered to resist oil and water, maintaining durability in harsh environments.
SUPERIOR BOND STRENGTH - High viscosity formula ensures a rock-solid grip on shafts, gears, and pulleys.
UNMATCHED HEAT ENDURANCE - Withstands extreme temperatures to keep your assemblies intact under pressure.
TRUSTED INDUSTRIAL STANDARD - Ranked top 150 in universal adhesives, backed by Henkel’s premium quality.

Loctite 638 Retaining Compound is a premium high-viscosity adhesive designed for metal bonding applications. It offers fast fixture times, exceptional resistance to high temperatures, oil, and water, making it ideal for securing shafts, gears, and pulleys in demanding industrial environments. Trusted by professionals, it delivers durable, long-lasting performance in a convenient 50ml bottle.

Specifications

ASIN	B0074NAX8A
Best Sellers Rank	#4,697 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #128 in Universal Adhesives
Brand	Loctite
Brand Name	Loctite
Colour	Red
Compatible Material	Metal
Container Type	Bottle
Customer Reviews	4.2 out of 5 stars 77 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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