I received the 50ml bottle is not even has half the content inside. Is this right or should it be full bottle?

Being a past Loctite adhesive specialist, anaerobic adhesives cure in the absence of air. Filling the bottle would shorten the shelf life because of no air around the product. Also, the bottle is made of an air permiable plastic. This why old bottles get sticky, the product is weeping through the pore's of the bottle. 50 and 250 ml bottles are not round and are flat by design to discourage any curing of the product in the center of the liquid inside the bottle. Anaerobic adhesives cure upon assembly and do not air dry, this why any liquid product should be wiped away from the completely assembly because in the liquid state it will craze painted surfaces. Half filled bottles are very normal. You can dump the product out in to a measuring cup to verify the amount but you will find you are not getting ripped off. It all about packaging.

I was examining some spilled M-243 and it is still gummy after two weeks. Is this normal or should it be hard to the touch?

This is normal M-243 is like a light glue to hold the screw or bolt in place like pipe tape is for a watertight seal. I use it after cleaning my hunting rifle on the screws during the re-assembly process. Hope this helps.

can I use this on a .125 inch set screw?

Yes. M-243 can be used on a 1/8 set screw. If possible, apply the threadlocker to both male and female threads before installing the set screw.

Does this prevent seizing and galling? (anti-seizing)

To the best of my knowledge, seizing and galling occur when two surfaces are rubbing against each other (by design e.g. shaft and bushing), but for some reason (e.g. lack of lubrication) will eventually destroy each other (causing seizing and galling). So I don't think this will help prevent seizing and galling in that sense as it would not be used as a lubricant. It is possible that it prevents corrosion in certain materials e.g. steel bolts and nuts. But that needs to be verified.

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ESKONKE Blue Thread Locker 243 Nuts & Bolts Locker Medium Strength Removable 1.69 Fl oz/50 ml Threadlocker Lock Tight & Seal Fasteners Anaerobic Curing Metal Glue (243)

ESKONKE Blue Thread Locker 243 Nuts & Bolts Locker Medium Strength Removable 1.69 Fl oz/50 ml Threadlocker Lock Tight & Seal Fasteners Anaerobic Curing Metal Glue (243)

Product ID: 493357910

Details

Brand
ESKONKE
Specific uses for product
Lock Tight
Material
Epoxy / Oleic
Item form
Liquid
Special features
Anaerobic blue

⏳Cures in 10 min, full strength in 24 hrs

🔩Medium strength lock for bolts ≤ M32

🌡️Works in extreme temps & high vibration

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Description

🔧 Lock it down, loosen it up—threadlocker that works as hard as you do!

RUST LEAK DEFENSE - Anaerobic curing seals fasteners perfectly, preventing rust, corrosion, and leakage without extra washers.
PRECISION APPLICATION - Innovative nozzle design ensures mess-free, controlled glue flow for long-lasting performance.
REMOVABLE YET RELIABLE - Blue formula offers strong hold but allows easy disassembly anytime with tools—no heat needed.
SECURE EVERY CONNECTION - Locks nuts & bolts tight to prevent loosening from shocks or vibrations—your gear stays flawless.
UNIVERSAL METAL COMPATIBILITY - Ideal for all metal screws below M32—automotive, electronics, furniture, and industrial gear covered.

ESKONKE Blue Thread Locker 243 is a medium-strength anaerobic adhesive designed to secure metal fasteners up to M32. It cures quickly within 10 minutes and reaches full strength in 24 hours, providing reliable resistance against vibration, shock, rust, and corrosion. Unlike permanent red variants, this blue formula allows easy disassembly with tools anytime, making it perfect for automotive, industrial, and household applications requiring durable yet serviceable fastening.

Specifications

Asin	B09SLRN9MV
Best Sellers Rank	#78,999 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #333 in Hardware Nuts & Bolts
Brand Name	ESKONKE
Color	Blue
Compatible Material	Metal
Container Type	Bottle
Customer Reviews	4.6 4.6 out of 5 stars (3,369) 4.6 out of 5 stars
Full Cure Time	24 Hours
Included Components	Liquid
Item Form	Liquid
Item Package Quantity	1
Item Weight	60 Grams
Manufacturer	ESKONKE
Material Type	Epoxy Acrylate(60-65%) / Oleic acid, ethoxylated(25-30%)
Model	243
Number Of Pieces	1
Other Special Features Of The Product	Anaerobic adhesive, blue thread locker 243, metal glue, thread lock nuts bolts, thread locker 243
Part Number	TL21-S002R
Specific Uses For Product	Lock Tight Fasteners, Lock Tight Nuts Bolts, Seal Fasteners
Tensile Strength	180 Pounds Per Square Inch
Unit Count	1.69 Fluid Ounces
Upc	788462034992
Viscosity Level	Medium to High
Volume	1.69 Fluid Ounces
Water Resistance Level	Water Resistant

Reviews

User

Good adhesive

Works well

25.11.2025

User

Pricy but works fine

19.11.2024

User

Works perfect

Thread locker worked as it should. Came fast and the bottles are big. Worth the price. Drying time is perfect

8.05.2026

User

Essential Dual-Strength Thread Locker for Any Mechanic or DIYer!

This 2-pack Thread Locker with both Blue 243 Medium and Red 271 High strength is an absolute must-have for any mechanic, DIYer, or automotive enthusiast! The Blue handles everyday fasteners that need vibration resistance but occasional removal, while the Red is perfect for permanent high-torque applications. Both hold incredibly well and the dual pack means you're covered for any job. I use these constantly on vehicle repairs and projects — they never let me down!

2.06.2026

User

Works great!

31.05.2026

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 35.48

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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