Freeze – Don’t Move!
By Todd Campau
September 1, 2015
Although use of Loctite® is a long-standing practice in MWD shops, it isn’t without challenges such as the ability to QC it, use of the proper type, applying the correct amount, etc. These reasons are exactly why Tolteq designers removed the need for it completely from the new TruCourseTM platform. However, until you get your hands on the latest and greatest in MWD, below is a refresher course in the more common Loctite types to ensure you’re using the right “tool for the job”.
Loctite products have proven to be an effective and reliable way to keep things from coming undone. We use three types at Tolteq, each for specific requirements. The variables we consider when choosing which Loctite to use include thread size, temperature and oil resistance.
Blue Loctite 246® is perfect for many of our products where resistance to heavy shock and vibration is essential along with solid performance in high temperature environments. These bolts have a diameter ≤ ¾”. Loctite 246 keeps things in place, yet is removable with regular hand tools.
Red Loctite 263® is ideal for our products requiring high strength and oil tolerance during high temperature operations. It doesn’t require primer, is corrosion inhibiting and most effective on bolts with a diameter up to 1” in temperatures between -65 and 300o F. It requires tools for removal.
Red Loctite 272® is high strength and can withstand temperatures up to 450o F. Basically, if you have bolts up to 1.5” in diameter and never want something to come apart, use Loctite 272. You can remove 272, but it may require localized heat and tools. Yeah, it’s a beast.
Check out the Henkel Thread Locking Guide for more information. Tolteq uses only three Loctite variations, but there are many more available.
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