Threadlocker Colors

Browse Products Locate a Distributor Contact Us

All you need to know about the difference in Red, Blue, Green and Purple Threadlockers

From heavy industrial equipment to delicate electronic components, LOCTITE® Threadlockers dramatically increase the reliability of threaded fasteners.

  • Locks against vibration & thermal expansion
  • Seals against corrosion & leakage
  • Reduces costs
  • Primerless & oil tolerant
  • High temperature performance

Removable & serviceable in every color

Easy disassembly with hand tools when using Low and Medium Strength formulas. High strength red formulas may be disassembled with localized heat and hand tools.

High Strength Permanent Red LOCTITE® Threadlockers

Learn more about red high strength threadlockers

Medium Strength Removable Blue LOCTITE® Threadlockers

Learn more about blue medium strength threadlockers

Low Strength (small thread) Purple LOCTITE® Threadlockers

Learn more about purple low strength threadlockers

Preassembled Wicking Grade Green LOCTITE® Threadlockers

Learn more about green preassembled threadlockers


Blog Post: Common Projects that Utilize Loctite Threadlockers
Locking and sealing nuts and bolts with Loctite® Threadlockers is a popular practice among vehicle repair, but there are a wide variety of other applications that can benefit from threadlocker technology as well.
Written by: Andy Scott

Go to All About Threadlockers Blog
Go to Vehicle Maintenance Blog

Find the Best Threadlocker for Your Industry:

Vehicle Repair / Aftermarket
Industrial Manufacturing & Assembly Customers

Threadlockers designed for use on the repair and maintenance of cars, motorcycles, trucks, and marine equipment.

Product Search
LOCTITE Supplier Information
Interactive Catalog