FORUMLOK Thread-Locking Compound

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FORUMLOK Thread-Locking Compound

Fast Cure Forumlok® Thread-Locking Compound replaces welding for casing joints on the bottom lengths to prevent unscrewing while drilling out cement. Welding of shoes, couplings, and collars to casing often weakens the casing and should be avoided wherever possible.

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BUY Forumlok on Drilling Supply Store

Forumlok® is a superior thread locking compound, commonly used for casing, tubing and drilling joints to prevent accidental detaching of string components during drilling operations.


- Casing O.D. 4-1/2” (in): 10 joints each Forumlok® kit will lock

- Casing O.D. 5-1/2” (in): 6 joints each Forumlok® kit will lock

- Casing O.D. 6-1/2” or 7” (in): 4 joints each Forumlok® kit will lock

- Casing O.D. 7-5/8”, 8-5/8”, or 9-5/8” (in): 3 joints per each Forumlok® kit

- Casing O.D. 10-3/4”, 11-5/8”, or 13-5/8” (in): 2 joints per each Forumlok® kit

- Casing O.D. 16” or 20” (in): 1 joint per each Forumlok®

- One (1) Forumlok® case contains ten (10) kits 

One (1) Forumlok® kit contains:

- One (1) 8 oz per can of Forumlok® thread-locking compound

- One (1) Hardener vial

- One (1) Applicator.


- Withstands high breakout torque: (field trials in temperatures ranging from 50 C (122F) through 400 Celsius (752F) at the bottom of the borehole, showed Forumlok® withstands superior torque loads, than a typical joint with 3-point welding with 2 inch beads.

- Easy Mixing: Forumlok® thread locking compound is specially formulated to ensure a stable mixing consistency in most operational environments.

- Long "Potlife" after mixing: Special formulation (catalyst and compound) in Forumlok® insures a "potlife" in excess of one hour; even at high.

- Unchanged by vibration: At 400 C (752F) Forumlok® treated joint was subjected to a steady breakout torque for 8 hours, white being subjected to continuous Air Hammer vibration. Breakout torque was increased to reach six times the prescribed 3,300ft-lb makeup torque, before the joint finally broke.

- High Lubricity: Tests were conducted using Forumlok® side by side with API modified thread dope. With the same amount of torque, the Forumlok® treated joint was cooler, than the joint treated with standard thread dope

- Leak-proof seal: Couplings made up with Forumlok® thread locking compound, using standard toque, were tested with water pressures in excess of the listed bursting force of the casing, without any signs of leakage.