Hylomar 4430 Blue Medium Strength Thread Locker 250ml. This Blue "Nut Lock" is a medium strength, low viscosity anaerobic threadlocker for use on fasteners subject to vibration, such as valve cover, water pump, and oil pan bolts. 4430 is service removable. It will protect threads from rust and corrosion.

Hylomar 4430 is manufactured in an ISO 9001 workplace and is used by OEMs worldwide.
 
Hylomar 4430 meets or exceeds the following specifications:
 
Directions for use:
 
1. Clean and dry parts.
2. Remove cap and snip nozzle tip.
3. Apply anaerobic adhesive to threaded area and assemble parts.
 
Hylomar threadlockers set in about 20 minutes and are fully cured within 24 hours.
 
Note: Anaerobic adhesives work through a chemical reaction. An active metal surface, the adhesive, and the absence of oxygen is required to cure. Plastics, and open exposed surfaces will not cure.
 
Hylomar 4430 is formulated to set within 20 minutes, full cure may take 24 hours.

The specified shelf life for Hylomar 4430 is 2 years from the date of manufacture.
 
For full details consult the Technical Data Sheet at www.hylomar.us/xxxxxxxxxx

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Why do you feel that Hylomar threadlockers are the best on the market?
 
Hylomar threadlockers were reformulated in 2005 as part of a UK "SMART Grant" to foster innovation and research. Our threadlockers have been upgraded with the newest technologies. Our competitors are locked into formulations by their OEM specifications, which would be very expensive to amend and repeat the testing.
 
Secondly, Hylomar makes its threadlockers in small batches, and tests each and every batch. We achieve a consistency in our cure times and breakaway torques with far less variance than our competition. Our most demanding customers - engine rebuilders - who are using used parts with the biggest wear issues - report fewer leakers and lower warranty costs when using our products.

What is the shelf life for your thread lockers? Can I use the product after the use by date?
 
The stated shelf life is two years from the date of manufacturer - which can be taken from the batch number printed on the bottle. However, if stored in a cool place, this product can last up to 5 years. Furthermore, the principal issue with older thread lockers is delayed cure times. Strength is seldom the issue. As a general rule, if it fully cures, it will function ok. Having said that, we always recommend testing a sample first.
 
To test, simply apply the product on a bolt or screw. If it cures to an acceptable strength (check with a torque wrench) withiin an acceptable time, it can be used without hesitation.