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Loctite® 640 Medium Strength/High Temperature Retaining Compound

Category Polymer , Adhesive , Thermoset
Manufacturer Loctite
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Loctite® 640 Medium Strength/High Temperature Retaining Compound.pdf
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Material Notes:
RetainersLoctite Corporation, the pioneer of anaerobic adhesives, has applied this technology to create retaining compounds that increase the shear strength of cylindrical, non-threaded assemblies. Finding wide acceptance as a standard method for assembling press and slip-fitted parts, Loctite® Retaining Compounds fill the "inner space" between components and cure to form a strong precision assembly. Formulated in a selection of viscosities, gap filling ability, flexibility and strength characteristics, Loctite® Retaining Compounds can be applied with automatic process equipment or dispensed manually.Loctite® 640 Medium Strength/High Temperature Retaining CompoundA medium viscosity retaining compound that resists temperatures to 400ºF. Recommended Primer: 7471 (T).Mil-Spec (R-46082B) Type II Typical Use: For high temperature applications
Physical Properties Metric English Comments
Density 1.12 g/cc
0.0405 lb/in³
Viscosity 600 cP
600 cP
Mechanical Properties Metric English Comments
Adhesive Bond Strength 20.7 MPa
3000 psi
Steel/Steel; Varies with substrates
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 204 °C
400 °F
Minimum Service Temperature, Air -53.9 °C
-65.0 °F
Processing Properties Metric English Comments
Cure Time 60.0 min
1.00 hour
1440 min

@Temperature 25.0 °C
24.0 hour

@Temperature 77.0 °F
Full Cure; Steel
Descriptive Properties Value Comments
Color Green
Gap Fill 0.007 in.
Diametral
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