Retaining Compound, 640 Series, Green, Liquid, High Temperature, Extended Working Time, 50 mL Bottle
Loctite 640 is a medium-viscosity anaerobic retaining compound for press-fit and slip-fit cylindrical parts such as bearings, bushings, and sleeves on shafts. It fills gaps up to 0.007 in, handles temperatures up to 400°F, and gives more working time before it fixtures.
Specifications
| Mfr # | 135520 (Loctite part 64031) |
|---|---|
| Brand | Loctite |
| Series | 640 |
| Size | 50 mL bottle |
| Color | Green |
| Chemistry | Acrylic ester, anaerobic cure |
| Viscosity | 600 cP |
| Max. gap fill | 0.007 in |
| Shear strength | 3,000 psi |
| Service temperature | -65°F to 400°F |
| Fixture / full cure | 1 h / 24 h at 77°F |
| Listed approval | MIL-R-46082B (existing designs) |
Before You Order
- Confirm the diametral gap is 0.007 in or less.
- Clean and degrease parts before applying.
- For sealing tapered pipe threads, see Loctite 5452 pipe thread sealant.
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