Retaining Compounds

Retaining compounds are high strength anaerobic adhesives used for a variety of applications such as securing cylindrical parts into shafts. They create a permanent connection between two materials, such as bonding roller bearings in bearing housing.

How do retaining compounds work?

Retaining compounds are applied as a liquid. Because of their high viscosity, the thickness and strength increases as the liquid cools to room temperature. Retaining compounds can be used for bonding metal surfaces together or for filling voids. They eliminate fretting corrosion and prevent the roughening of surfaces that lead to the need for replacement parts. Due to their high strength, retaining compounds are best used in parts that require infrequent dismantling.

Types of retaining compounds

Retaining compounds are available in a range of strengths and cure times. Depending on the application, maximum operating temperature, chemical composition and chemical ingredients should be considered before you choose retaining compounds for your job. For parts that require a permanent bond, high-strength retaining compounds are recommended. Medium-strength retaining compounds should be used when parts will need to be taken apart.


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Description Price Trade Name Application Colour Chemical Ingredients Product Form Package Size Cure Time Strength Maximum Operating Temperature Chemical Composition Operating Temperature Range Anaerobic Minimum Operating Temperature Package Type
RS Stock No. 821-1425
Mfr. Part No.Loctite 638
BrandLoctite
SGD19.90
Each
units
Loctite 638 Bonding Green 2-Hydroxyethyl Methacrylate, Acrylic Acid, Cumene Hydroperoxide, Dimethacrylate Ester, Hydroxyalkyl Methacrylate, Methacrylate Monomer, Methacrylic Acid, Polyglycol Dimethacrylate, Polyurethane Methacrylate Resin Liquid 10 ml 1 week, 7 days, 15 min, 24 h High +150°C 2-Hydroxyethyl Methacrylate, Acrylic Acid, Cumene Hydroperoxide, Dimethacrylate Ester, Hydroxyalkyl Methacrylate, Methacrylate Monomer, Methacrylic Acid, Polyglycol Dimethacrylate, Polyurethane Methacrylate Resin -55 → +150 °C Yes -55°C Bottle
RS Stock No. 514-537
Mfr. Part No.234795
BrandLoctite
SGD85.29
Each
units
Loctite 638 Bonding, Retaining Green Urethane Methacrylate Liquid 50 ml 5 h High +150°C Urethane Methacrylate -55 → +150 °C Yes -55°C Bottle
RS Stock No. 496-057
Mfr. Part No.135522
BrandLoctite
SGD90.39
Each
units
Loctite 641 Bonding, Retaining Yellow Methacrylate Liquid 50 ml 6 → 24 h Medium +150°C Methacrylate -55 → +150 °C Yes -55°C Bottle
RS Stock No. 373-1498
Mfr. Part No.LOCTITE® 648
BrandLoctite
SGD85.29
Each
units
Loctite 648 Bonding, Retaining Green - Liquid 50 ml 3 → 6 h High +175°C Urethane Methacrylate -55 → +175 °C Yes -55°C Bottle
RS Stock No. 496-136
Mfr. Part No.229232
BrandLoctite
SGD90.63
Each
units
Loctite Quick-Metal 660 Bonding, Retaining Grey Urethane Methacrylate Gel 50 ml 20 h High +150°C Urethane Methacrylate -55 → +150 °C Yes -55°C Bottle
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