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Park Tool TLR Thread Locker TLR-1 - Blue
Park Tool TLR Thread Locker TLR-2 - Red
TLR-1 - Blue
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Park Tool TLR Thread Locker TLR-1 - Blue
Park Tool TLR Thread Locker TLR-2 - Red

Park Tool
TLR Thread Locker

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Backorder: This item is currently not in stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Medium and High-Strength Threadlockers

Secure installation of threaded components starts with the Park Tool TLR Thread Locker. The TLR-1 and TLR-2 are medium and high-strength threadlockers that lock threaded assemblies and prevent them from moving.

This oil-tolerant compound is compatible with steel and aluminum.

When using the Park Tool TLR Threadlocker, keep in mind that some painted surfaces can be sensitive to thread lockers, retaining compounds, and primers. Test first on an inconspicuous area to see if it causes a stain or discoloration. Clean off any excess from painted surfaces immediately, then use as needed.

Please note: Park Tool AP-1 Adhesive Primer must be used to prep all components, fasteners and carbon fiber surfaces prior to application of Park Tool threadlockers or retaining compound. Failure to do so could result in permanently bonded parts.


  • Available in Medium and High Strength
  • Compatible with steel and aluminum
  • Oil tolerant
  • Not recommended for titanium threads
  • TLR-1 Competes with Loctite® 242/243™
  • TLR-2 Competes with Loctite® 262/263™

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Volume: 10 mL

TLR-1 - Blue

Mfg PartNum: TLR-1 

TLR-2 - Red

Mfg PartNum: TLR-2