Retaining Adhesive

Loctite® 660

Used for repairing worn coaxial parts without remachining; enables re-use of worn bearing seats, keys, splines, tapers, or for retaining shims

Strength Required	High
Handling Strength	20 min
Diametrical Clearance	Up to 0.5mm
Temperature Resistance	150°c
Pack Sizes	50ml

Loctite® 641

Recommended for parts that will need subsequent dismantling i.e. retention of bearings onto shafts and into housings

Strength Required	Medium
Handling Strength	30 min
Diametrical Clearance	Up to 0.1mm
Temperature Resistance	150°c
Pack Sizes	10ml, 50ml, 250ml

Loctite® 668

Medium strength retaining stick, convenient to use. Suitable where product application access is difficult - overhead, under or around machinery - on components that cannot be moved. Recommended for all kinds of retaining applications with medium strength

Strength Required	Medium
Handling Strength	30 min
Diametrical Clearance	Up to 0.15mm
Temperature Resistance	150°c
Pack Sizes	9g, 19g stick

Loctite® 648

Recommended for high temperature retaining of parts with a clearance or interference fit i.e. retaining bushes, bearings, seals, fans and liners

Strength Required	High
Handling Strength	5 min
Diametrical Clearance	Up to 0.15mm
Temperature Resistance	175°c
Pack Sizes	50ml, 250ml

Loctite® 638

Gives best resistance to dynamic, axial and radial loads. Recommended for retaining shafts, gears, pulleys and similar cylindrical parts. KWT approval for cold and hot water

Strength Required	High
Handling Strength	8 min
Diametrical Clearance	Up to 0.25mm
Temperature Resistance	150°c
Pack Sizes	50ml, 250ml

Loctite® 603

For retaining close fitting cylindrical parts (up to 0.1 mm gap). For use on cylindrical fitting parts where thorough degreasing is not possible. Tested and approved for use on bearings

Strength Required	high
Handling Strength	8 min
Diametrical Clearance	Up to 0.1mm
Temperature Resistance	150°c
Pack Sizes	10ml, 50ml, 250ml