What is “blue” Loctite?

LOCTITE Blue 242 0.2 Oz. Blue Threadlocker - Power Townsend Company

Blue Single Use Medium Thread Locker Loctite by Permatex - 19967

LOCTITE Nut & Bolt Threadlocker Blue 242 Adhesive Glue Removable 0.2oz 209728 723169604536

Threadlocker 243 Blue - Medium Strength Primerless Loctite

Loctite threadlockers - which one is right for the job?, V Tech SMT - Blog, Latest News & Articles

LOCTITE .20 oz. Threadlocker

Loctite Blue 242 Threadlocker

Loctite 587 Blue - High Performance RTV Silicone Gasket Maker, 58791

Nuts & Bolts: Does Loctite Go Bad?

1330906 Loctite 243 Oil Tolerant Removable Medium Blue Threadlocker 36ml [LOC-1330906] : Threadlockers - $20.95 EMI Supply, Inc

The MEDIUM STRENGTH threadlocker that can be disassembled with normal hand tools.

7082 LOCTITE 242 - Threadlocker Blue