---
product_id: 335336564
title: "1330906 243 Medium Strength Surface Insensitive Threadlocker, 36-Milliliter Tube"
brand: "loctite"
price: "13086 kr"
currency: ISK
in_stock: true
reviews_count: 5
category: "Loctite"
url: https://www.desertcart.is/products/335336564-1330906-243-medium-strength-surface-insensitive-threadlocker-36-milliliter-tube
store_origin: IS
region: Iceland
---

# Heat resistant up to 140°F Medium strength for reliable hold Sets in 10 minutes, full cure in 24h 1330906 243 Medium Strength Surface Insensitive Threadlocker, 36-Milliliter Tube

**Brand:** loctite
**Price:** 13086 kr
**Availability:** ✅ In Stock

## Summary

> 🔩 Lock it down with Loctite 243 — the pro’s choice for unstoppable thread security!

## Quick Answers

- **What is this?** 1330906 243 Medium Strength Surface Insensitive Threadlocker, 36-Milliliter Tube by loctite
- **How much does it cost?** 13086 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/335336564-1330906-243-medium-strength-surface-insensitive-threadlocker-36-milliliter-tube)

## Best For

- loctite enthusiasts

## Why This Product

- Trusted loctite brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Fast-Track Your Fix:** Quick-setting formula lets you start projects fast and finish with confidence
- • **Shock & Vibration Proof:** Engineered to secure bolts under heavy mechanical stress and chemical exposure
- • **Versatile Fit for Every Bolt:** Ideal for nuts and bolts from ¼" to ¾" (6-20 mm) across automotive and industrial uses
- • **Trusted by Pros, Loved by Makers:** OEM-specified and lab-tested for professional-grade reliability
- • **Surface Insensitive Oil Tolerance:** Works flawlessly on oily, stainless steel, aluminum & plated metals

## Overview

Loctite 1330906 243 is a medium-strength, oil-tolerant threadlocker trusted by professionals and OEMs. It bonds securely to all metals including stainless steel and aluminum, tolerates minor oil contamination, and withstands shock, vibration, and chemical exposure. Setting begins in 10 minutes with full strength in 24 hours, and it resists temperatures up to 140°F. Perfect for automotive and industrial bolts from ¼" to ¾", it ensures durable, reliable fastening where failure is not an option.

## Description

LOCTITE Automotive Threadlocker Blue 243 is a medium-strength, medium-temp, oil-tolerant adhesive designed for general-purpose automotive applications. OEM-specified and trusted by professionals, this anaerobic threadlocker bonds effectively to all metals, including stainless steel, aluminum, and plated surfaces. Its enhanced oil tolerance ensures reliable performance, even in challenging conditions. LOCTITE Blue 243 is ideal for securing components that endure heavy shock, vibration, and chemical exposure. It works perfectly on rocker studs, adjustment bolts, valve and cam covers, oil pans, disc brake calipers, intakes, alternators, and pulley assemblies. Suitable for all nut and bolt applications ranging from ¼" to ¾" (6 mm to 20 mm). The product sets in just 10 minutes, allowing for a fast start, and reaches full strength within 24 hours, providing a durable, temperature-resistant bond up to 140°F. LOCTITE Blue 243 delivers long-lasting, reliable results for your automotive repair and maintenance needs.

Review: good
Review: I bought this to use on a firearm and I must say I am very impressed. I used loctite 242 and it produced some great success but using it in conjunction with oily areas of the rifle, it seems to cause issues. It appears either I had to carefully apply oil or just never oil the area. Then came this product after reading around. The maximum temperature threshold for loctite 242 is about 200 degrees. With Loctite 243 it's almost twice that nearing 360 degrees. On top of that, it is indeed surface insensitive when you apply it. Before going all crazy with this product, I decided to give it a garage science test. My favorites are Loctite 242, and Rocksett and finally the newcomer, 243. I got a scope mount that had set screws to torque it down. What I did was for each screw I would wipe it completely clean with rubbing alcohol, and simply apply each product. Each product worked as advertised and to unscrew I had to apply above average torque to break loose. Then I cleaned it all again and got the stuff off the screw. I then applied a light oil on the surface and wiped it down with a towel the best I could to get it somewhat dry but still have oil on it that you can't see. The loctite 242, and Rocksett both failed. I could unscrew it by hand after waiting 1 week and it even seemed like it was loose before even trying to unscrew it. With loctite 243, it had the same amount of torque required to unscrew it and it was on really tight. It seems like it is working as advertised. My guess is if loctite 243 fail, it will fail due to high temperature but that is expected on a firearm. It's impossible to really say how hot a firearm can get as it depends on how much you shoot and all that. From reading online military manuals, it appears that the expected temperature range depends on location of the barrel. On a rifle, it appears the average temperature for near the muzzle is about 400-600 degrees and this is shooting approximately 1 round per second until 60 rounds are fired. Of course that is on the surface of the barrel and the question is transferring that heat off the barrel to where the set screws are different questions. It's only a matter of time before this is figured out and I believe so long as whatever it is torqued correctly I shouldn't see any issues. Overall I am impressed with this product. It does work very well and I highly recommend it for firearm folks who are looking for something that can still oil over. You don't have to go all crazy with taking off the oil on the screw when you install whatever it is you're installing. However, I still recommend doing that just to be sure you have the best application possible. From there, you can apply oil to your heart desire without worry about it breaking loose. As a side note, another product I'm looking into is loctite 246. This is the same stuff as 243 where it is surface insensitive, BUT it has a higher temperature threshold. I also notice loctite 246 has a expiration date but the loctite 243 doesn't. Not sure what the shelf life is on this but that is another thing I will monitor on my own.

## Features

- Trusted by Professionals: Our blue LOCTITE automotive thread locker products are not just OEM-specified, they are trusted by professionals because they are designed by auto manufacturers and lab tested (PN: 1330906)
- Works on all metals: Works on all metals, including passive substrates such as stainless steel, aluminum, and plated surfaces; features enhanced minor oil tolerance for superior performance
- Reliable & Durable Performance: Engineered for securing components that endure heavy shock, vibration, and extreme chemical or environmental conditions so it will requires localized heating and hand tools for easy disassembly
- Multi-Application: Perfect for use on rocker studs, rocker adjustment bolts, bolts on valve and cam covers, oil pans, disc brake calipers, intakes and alternators, and pulley assemblies; Ideal for all nut and bolt applications ¼" to ¾" (6 mm to 20 mm)
- Quick-setting for convenience: The product begins setting in just 10 minutes, giving you a quick start on your project, and reaches its full strength after 24 hours, ensuring a complete and durable cure by the next day and is temperature resistant up to 140 degrees

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005M1RI84 |
| Brand | Loctite |
| Brand Name | Loctite |
| Colour | Blue |
| Compatible Material | Stainless Steel |
| Container Type | Tube |
| Country of Publication | India |
| Customer Reviews | 4.8 out of 5 stars 645 Reviews |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00079340439092 |
| Included Components | (1) Threadlocker 243 Surface Insensitive-Medium Strength Bottle, Blue, 36-ml |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | Loctite 1330906 Threadlocker 243 Surface Insensitive-Medium Strength Bottle, Blue, 36-ml |
| Item Weight | 0.18 Pounds |
| Manufacturer | Loctite |
| Material | Aluminum,Stainless Steel |
| Material Type | Aluminum,Stainless Steel |
| Model | 1330906 |
| Other Special Features of the Product | Oil Tolerant, High-Temperature, General Purpose |
| Special Feature | Oil Tolerant, High-Temperature, General Purpose |
| Specific Uses For Product | Repair |
| UPC | 079340439092 |
| Unit Count | 1.22 Fluid Ounces |
| Viscosity | Medium |
| Volume | 36 Millilitres |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Loctite
- **Specific Uses For Product:** Repair
- **Material:** Aluminum,Stainless Steel
- **Item Form:** Liquid
- **Special Feature:** Oil Tolerant, High-Temperature, General Purpose

## Images

![1330906 243 Medium Strength Surface Insensitive Threadlocker, 36-Milliliter Tube - Image 1](https://m.media-amazon.com/images/I/71vHzZz7TEL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: is there a loctite that resists gasoline ?**
A: Most of our Loctite anaerobic sealants and threadlockers will resist gasoline once they're fully cured. The right product will depend on your application requirements. Please call 1-800-LOCTITE (562-8483) to receive a product recommendation from one of our engineers.

**Q: How do I open the Loctite 243 bottle?**
A: You simply twist the cap and it should open.

**Q: Is this good to use on battery cable bolts?**
A: Yes this can be used on the threads.  Loctite 243 is a plastic so keep it off the post where good electrically conductive contact is required.
I am thinking a car battery here.   If this is a different design and IF THIS  THREADED ASSEMBLY REQUIRES ELECTRICALLY CONDUCTIVY DO NO USE OUR PLASTIC THREADLOCKER IT WILL INSULATE AND GENERATE RESISTANCE.

**Q: Can this still be effective on a bolt that is threaded, left to sit, and then threaded again to torque spec?**
A: Left for set how long? When you remove the bolt, if it's still wet then yes, but I would wipe it off and reapply because I would want a thicker application for a tighter bond.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by Y***O on 21 October 2021*

good

### ⭐⭐⭐⭐⭐ Review
*by D***A on 6 June 2015*

I bought this to use on a firearm and I must say I am very impressed. I used loctite 242 and it produced some great success but using it in conjunction with oily areas of the rifle, it seems to cause issues. It appears either I had to carefully apply oil or just never oil the area. Then came this product after reading around. The maximum temperature threshold for loctite 242 is about 200 degrees. With Loctite 243 it's almost twice that nearing 360 degrees. On top of that, it is indeed surface insensitive when you apply it. Before going all crazy with this product, I decided to give it a garage science test. My favorites are Loctite 242, and Rocksett and finally the newcomer, 243. I got a scope mount that had set screws to torque it down. What I did was for each screw I would wipe it completely clean with rubbing alcohol, and simply apply each product. Each product worked as advertised and to unscrew I had to apply above average torque to break loose. Then I cleaned it all again and got the stuff off the screw. I then applied a light oil on the surface and wiped it down with a towel the best I could to get it somewhat dry but still have oil on it that you can't see. The loctite 242, and Rocksett both failed. I could unscrew it by hand after waiting 1 week and it even seemed like it was loose before even trying to unscrew it. With loctite 243, it had the same amount of torque required to unscrew it and it was on really tight. It seems like it is working as advertised. My guess is if loctite 243 fail, it will fail due to high temperature but that is expected on a firearm. It's impossible to really say how hot a firearm can get as it depends on how much you shoot and all that. From reading online military manuals, it appears that the expected temperature range depends on location of the barrel. On a rifle, it appears the average temperature for near the muzzle is about 400-600 degrees and this is shooting approximately 1 round per second until 60 rounds are fired. Of course that is on the surface of the barrel and the question is transferring that heat off the barrel to where the set screws are different questions. It's only a matter of time before this is figured out and I believe so long as whatever it is torqued correctly I shouldn't see any issues. Overall I am impressed with this product. It does work very well and I highly recommend it for firearm folks who are looking for something that can still oil over. You don't have to go all crazy with taking off the oil on the screw when you install whatever it is you're installing. However, I still recommend doing that just to be sure you have the best application possible. From there, you can apply oil to your heart desire without worry about it breaking loose. As a side note, another product I'm looking into is loctite 246. This is the same stuff as 243 where it is surface insensitive, BUT it has a higher temperature threshold. I also notice loctite 246 has a expiration date but the loctite 243 doesn't. Not sure what the shelf life is on this but that is another thing I will monitor on my own.

### ⭐⭐⭐⭐⭐ Review
*by D***R on 21 September 2015*

The 243 formula really makes a difference when used on stainless and other corrosion resistant metals, even with oil or grease contamination, like that you often get in tap holes of anything mechanical like engine, bikes, gears and sprockets, motors, etc. Using the 242, I often observed very poor, if not total lack of thread locking, when using stainless fasteners or in a shop environment, anywhere around greasy or oily parts. With the 243, I still yet to have a failure in thread locking and I've been using it for over a year now. 36mL is a lot cheaper than the 6mL tube and no, it won't go to waste because you used it once a year ago and are afraid it's no good anymore. Simply cap it off properly and it's gonna remain usable for a very long time. Don't forget to shake it up before using it that day, just like you would shake and stir your paint before painting.

## Frequently Bought Together

- LOCTITE 243 Automotive Threadlocker Blue - Medium Strength Thread Lock, General Purpose, Oil Tolerant - 36 ml, 1 Pack
- Loctite 271 Automotive Threadlocker Red - High Strength Thread Lock, Fluorescent, Heavy-Duty, Works on All Metals - 36 ml, 1 Pack
- Loctite 272 Automotive Threadlocker Red – High Temp Thread Lock, Heavy-Duty High Strength Applications, Works on All Metals - 36 ml, 1 Pack

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---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-20*