Loctite-221-Threadlocker-Loctite-135331-P-Loctite-221-has-been-designed-for-locking-&-sealing-threaded-fasteners-which-require-easy-disassembly-with-standard-h&-tools-It-cures-when-confined-in-the-absence-of-air-between-close-fitting-metal-surfaces-&-prevents-loosening-&-leakage-due-to-shock-&-vibration-P-P-Loctite-221-is-particularly-suitable-for-applications-such-as-the-adjustment-of-set-screws-small-diameter-or-long-engagement-length-fasteners-where-easy-disassembly-is-r