1. Product Description:
| Composition |
Single component |
| Strength |
High intensity |
| Viscosity |
Low viscosity |
| Curing mechanism |
Anaerobic |
| Application |
Cylindrical retaining seal |
2. Typical use:
DX648 is mainly suitable for bonding cylindrical assemblies and can be used in places with a continuous working temperature of 175 ℃. This product solidifies when isolated from air between tightly fitting metal sealing surfaces, which can prevent loosening, micro vibration wear, leakage, and corrosion of metal fittings caused by vibration or impact. Typical applications include filling the gaps between tight fitting press fit parts, key grooves, and splines; Assemble bearings and bushings, and increase the holding strength of the high-pressure fit.
3. State before solidification:
| Chemical type |
Methacrylate ester |
| Color |
Green |
| Specific gravity @ 25 ℃ |
1.10 |
| Viscosity@25℃,cp Brookfield-RVT
rotor 2@20rpm |
450-600 |
| flash point/℃ |
﹥93 |
4. Typical curing characteristics and properties after curing:
| Working temperature range/℃ |
-54~175 |
| Curing speed (initial curing/full curing) |
5 minutes/24 hours |
| Maximum filling gap/mm |
0.15 |
Physical performance:
| Thermal expansion coefficient ASTMD696,K |
80×10 |
| thermal conductivity ASTMC177,W·m·K |
0.1 |
| Shear strength after curing at 25 ° C for 24 hours, MPa |
≥20 |
| Curing at 25 ° C for 15 minutes, shear strength, MPa |
≥12.4 |
Chemical/solvent resistance test:
Aging for 1000 hours under the following conditions and testing at 22 ° C.
| Environment |
Remaining rate of initial strength/% |
| thermal ageing |
100 |
| Engine oil at 150 ℃ |
100 |
| Brake fluid at 150 ℃ |
80 |
| 50/50 ethylene glycol/water @ 120 ℃ |
75 |
| water@90℃ |
80 |
| Gasoline at 25 ℃ |
100 |
| Diesel @ 25 ℃ |
100 |
| Ethanol at 25 ℃ |
100 |
5. Usage:
Assembly:
1、 For optimal results, thoroughly clean the surface with 755 cleaning agent and air dry.
2、 When the temperature is very low or the gap is large, or the material is an inert metal, the curing speed of the adhesive solution slows down. It is possible to consider using accelerator 7649 to accelerate the curing speed.
3、 Shake well before use.
4、 For sliding parts, simply apply a circle of adhesive around the guide angle of the shaft and sleeve, and rotate left and right during assembly to ensure good coating.
5、 For press fit parts, both surfaces to be bonded must be coated with adhesive and assembled under appropriate high pressure.
6、 For hot fitting parts, the adhesive should be applied to the shaft, and then the shaft sleeve should be heated to create sufficient clearance for free assembly.
7、 Do not apply load to the component until it reaches sufficient operational strength.
disassemble:
Heat the assembly parts locally to 250 ℃ and disassemble them while they are still hot.
clean:
For solidified glue, it can be soaked in gasket remover 790 or mechanically polished with tools such as steel brushes.
6. Storage conditions:
1、 This product should be stored in a dry and cool place, with an ideal storage temperature of 18-26 ℃.
2、 To avoid contaminating unused adhesive, do not pour the poured adhesive back into the original packaging container.
3、 Keep away from children.
Declaration: This manual is true and reliable. The data can only be used as a reference. We are not responsible for any results obtained by anyone using methods beyond our control. If the customer uses Usage not mentioned in this manual, the consequences shall be borne by the customer themselves. It is recommended that users conduct experiments based on the data provided in this article before formal use. Customers should be responsible for whether the product meets the usage requirements. The company explicitly declares that it is not responsible for any necessary or accidental losses, including losses in terms of profits
