I got this off the Locktite site - hope it helps
Loctite 222 - Low Strength (LOC-22221)
Use Loctite 222 where occasional adjustments of small fasteners may be required. Small hand tools can be used to overcome the adhesive seal. Best for 1/4” and smaller fasteners. Temp. range: -65º to 300ºF (-54º to 149ºC).
Loctite 242 - Medium Strength (LOC-24221, LOC-24231)
Make ordinary nuts vibration-proof! Loctite 242 holds bolts and cap screws securely, while sealing out air and moisture, thus preventing wear and corrosion. Nuts can be removed with ordinary hand tools. Temp. range: -65º to 300ºF (-54º to 149ºC).
Loctite 262 - High Strength (LOC-26221)
helps you permanently anchor studs, cylindrical parts, bearings and bushings. Replace shaft locking devices such as keyways and splines. Provides greater break-loose torque than Class 5 Interference fits. Seals against leakage and corrosion; unaffected by liquid fuels, lubricants and most chemicals. Temp. range: -65º to 300ºF (-54º to 149ºC).
Loctite 271 - High Strength (LOC-27131)
High strength adhesive for larger fasteners up to 1" in diameter. It is used with marine engine studs, automotive suspension bolts, pump fasteners and with other heavy duty bolt applications. Temp. range: -65º to 300ºF (-54º to 149ºC).
Loctite 290 - Medium Strength (LOC-29021)
This capillary sealant locks and seals fasteners without disassembly. Loctite 290 uses a "wicking" action to penetrate invisible spaces and pores, then hardens into a solvent-resistant structural seal. Makes adjustment screws and set screws tamper-proof. Temp. range : -65º to 300ºF (-54º to 149ºC).
• Recommended Primer : Loctite 7649