Description
Strong threadlocker 52A70 - Arexons
Specific product for permanent braking of studs, nuts, bolts.
Recommended for braking threaded parts not subject to disassembly.
Low thixotropy product.
Eliminates the use of conventional braking media such as nut, lock nut, washers, grower, self-locking nut.
Avoids loosening due to vibration, shock, temperature changes.
Has high resistance to water, oils, fuels, hydraulic and refrigeration fluids, gases and vapours.
Prevents corrosion.
Also suitable for surfaces with slight presence of oil.
Employment
Permanent braking of studs, nuts, bolts.
Classification
Product tested according to DIN 54454.
Use
Surfaces must be clean and dry.
We recommend the use of System MC217.
Apply the product to the bolt in the area of the coupling with the nut.
For blind holes, apply the product to the bottom of the hole.
Assemble and tighten as required.
Wait the specified curing time before handling the coupling.
For application temperatures below +15°C or slow curing speeds, System AP724 Fast Primer can be used.
Warnings
This product is not normally recommended for use with plastics, where stress cracking is possible.
Storage
Product shelf life after packaging in sealed package and storage at room temperature: 18 months minimum.
Technical specifications
| Base | Anaerobic methacrylic resin |
| Colour | Green |
| Specific weight | 1,10 g/ml |
| Viscosity at 25°C | 450 - 650 mPa.s |
| Maximum diametrical play | 0,15 mm |
| Maximum thread diameter | M 20 |
|
Unscrewing resistance (N.m) initial residual |
25 - 35 50 - 65 |
| Creep resistance (N/mm2 ) | 15 - 10 |
|
Polymerisation time handling functional final |
10 – 20 minutes 1 – 3 Hours 24 Hours |
Operating temperature |
-55°C +200°C |
Mechanical resistance:
The graph below shows the mechanical strength of the product (expressed in %) as temperature increases.
Chemical resistance:
Test carried out after 24 hours of curing the product at the indicated temperature.
| Substance | °C | Resistance after 100 h | Resistance after 1000 h | Resistance after 5000 h |
| Olio motore | 125 | good | discreet | discreet |
| Olio cambio | 125 | good | discreet | discreet |
| Benzina | 25 | excellent | excellent | excellent |
| Acqua/glicole 50% | 87 | excellent | good | good |
| Liquido freni | 25 | excellent | excellent | excellent |