DELO – ML Thread-sealing, vacuum tightness, heat resistant adhesive
10:57 - 26/12/2020
In the field of mechanics, hydraulics, pneumatics, there are many components that need to be connected by threaded bolt, requiring vacuum tightness, heat resistance, medium resistance, self-loosening of bolts and nuts resistance, ... Besides, bolts and nuts often have certain mechanical tolerances, and when working in a continuously vibrating environment, they are easily self-loosened.
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DELO - the world's leading brand of industrial adhesive products and adhesive solutions from Germany. DELO adhesives are outstanding in diversity, suitable to many different materials, for high tensile strength and resistance to harsh environments.
In the field of mechanics, hydraulics, pneumatics, there are many components that need to be connected by threaded bolt, requiring vacuum tightness, heat resistance, medium resistance, self-loosening of bolts and nuts resistance, ... Besides, bolts and nuts often have certain mechanical tolerances, and when working in a continuously vibrating environment, they are easily self-loosened.
There are many solutions to this problem such as: using metal gaskets, rubber o-rings, thread seal tape, or using thread-locking glue, ... In there, using thread-locking glue is the best choice. Thread locking is the most effective solution for fixing connections that require high strength and vacuum tightness.
Thread-locking adhesive is also a product line that DELO has invested in and researched to produce quality adhesive products. Products are used for this application include:
DELO ML 5198, pipe thread sealant, light yellow color, medium resistance is very good;
DELO ML 5298, pipe thread sealant, blue color, with high compressive shear strength, good chemical resistance;
DELO ML 5249, sealants for all types of bolt-nut threads with requires vacuum tightness, low viscosity, blue color, high mechanical properties, and extreme chemical resistance;
HUST Vietnam has compiled and sent to you a summarize the specific properties of the above adhesive lines table as below. You can easy to find possible adhesive for your applications:
DELO | ML 5198 | ML 5298 | ML 5249 |
Component |
| ||
Used in a temperature range | -60 ~ +150 oC, | ||
Curing | • Anaerobic curing at room temperature, under metal surface catalyst, initial curing after several minutes and finally cured within 24h; • The curing may be assisted by heat addition or activator as DELO-QUICK,… | ||
Applications | Surface sealing, tubeless tire rim, metal surface with rubber, threaded pipe | • Coating for all screws, vacuum tightness, for air supply pipes,…; • Specialized for sealing bolts, screws, threaded protection; | |
Properties |
| When determining the tightening torque considering the frictional torque of the screws, the following total frictional torques can be used for the calculation: μ total 0.10 to 0.13 on blank stainless steel screws, μ total 0.13 to 0.17 on phosphated stainless steel screws; | |
Color | Yellow | Blue | |
Transparent | Transparent up to 0.4 mm if heat addition or be activated | ||
Density | 1.1 (g/cm3) | ||
Viscosity | Pasty | 1000 mPa.s, thixotropic | |
Curing time (at 23oC, on phosphated zinc screw) | Until initial strength: | ||
5~10 min | 10~15 min | 5~20 min | |
Until final strength: 24h | |||
Off-Torque | Without M (on): | ||
5 Nm | 14 Nm | 18 Nm | |
With M (on) =46 Nm: | |||
44 Nm | 50 Nm | 50 Nm | |
Compression shear strength | 5 MPa | 15 MPa | 15 MPa |
Chemical resistance | Very good | ||
Storage life | 12 months, at room temperature (max. 25oC), with unopened original cartridge up to 200 ml | 12 months, at room temperature (max. 25oC), with unopened original cartridge up to 600 ml | |
For more information, please contact us.
HUST is proud to be the exclusive distributor of adhesive products, dispensing, adhesive curing systems, and technology transfer from DELO in Vietnam!