Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of hnbr electric hammer drills in China, also supports customized service. Please feel free to buy high quality hnbr electric hammer drills for sale here from our factory.
Products Description
HNBR electric hammer drills into the exhaust valve rubber sealing ring
Heat resistance
HNBR can withstand continuous operating temperatures up to 150°C, which is much higher than ordinary nitrile rubber.
In the high-intensity working environment of electric hammer drills, HNBR sealing rings can maintain good sealing performance.
Aging resistance
HNBR is more resistant to oxidation and ozone and has a longer service life than ordinary nitrile rubber.
It can maintain sealing performance for a long time under the high temperature, high pressure, and high-frequency working conditions of electric hammer drills.
chemical resistance
HNBR has excellent corrosion resistance to some chemical media such as lubricants, fuels, etc.
Suitable for various chemical substances that may be exposed to in the working environment of electric hammer drills.
Wear resistance
HNBR material is harder and has good wear resistance.
Able to withstand high-frequency collision and friction of electric hammer drill pistons, valves, and other components.
In terms of the manufacturing process, HNBR sealing rings are generally made of high-precision injection molding, and the surface can also be polished or coated to further improve wear resistance. Process parameters are strictly controlled during the production process to ensure stable and reliable product quality.
1. Material
The sealing ring of the electric hammer drilling inlet and exhaust valve is usually made of high-temperature and pressure-resistant fluorine rubber (FKM/Viton) or special nitrile butadiene rubber (HNBR).
| Physical property information: | Ozone resistance | HNBR | |
| Basic Information | Good chemical resistance | ||
| Characteristic | Good wear resistance Good weather resistance Heat resistance, high Oil resistance |
||
| Use | Marine applications; Oil/Gas Supplies | ||
| Agency rating | ASTM D 2000 black | ||
| Exterior | Rating | ||
| Hardness | 70 | Test Methods | |
| IRHD hardness | Rating | unit system | ASTM D1415, ISO 48 |
| Elastomer | 16.3 | MPa | Test Methods |
| Tensile Strength (Yield) | 250 | % | ASTM D412, ISO 37 |
| Elongation (breaking) | 12 | % | ASTM D412, ISO 37 |
| Compression set (135°C, 24 hr) | Rating | unit system | ASTM D395, ISO 815 |
| Aging | 10 | % | Test Methods |
| Rate of change of tensile strength in air (150°C, 70 hr) | -10 | % | ASTM D412, ISO 37 |
| Rate of change of ultimate elongation in air (150°C, 70 hr) | 3 | ASTM D412, ISO 37 | |
| Rate of change of IRHD hardness in air (150°C, 70 hr) | Rating | unit system | ASTM D573, ISO 188 |
| Thermal properties | 180 | °C | |
| Maximum Operating Temperature | Rating | unit system | |
| Additional information | -30 | °C | |
| Low-Temperature Resistance - Non-Brittle after 3 mins | |||
| Minimum Operating Temperature (Static): -40°C (-40°F)Minimum Operating Temperature (Dynamic): -30°C (-22°F) | |||
2. Performance
- High-temperature resistance: It can withstand high-temperature environments above 200℃, ensuring that the valve seal will not fail due to high temperature.
- Pressure resistance: It can withstand the high-pressure impact generated during the operation of the electric hammer drill and maintain good sealing.
- Wear resistance: impact resistance and wear prevention, ensuring long-term use without loss of sealing function.
- Chemical corrosion resistance: Resist corrosion from chemical media such as lubricants and fuels, extending service life.
3. Processing technology
Seals are generally manufactured using an injection molding process to achieve precise, consistent size and shape.
The surface can be polished or plated to improve wear resistance and surface finish.
Process parameters such as temperature and pressure are strictly controlled during the production process to ensure stable product quality.
The final product will be tested and screened to ensure it meets the electric hammer drill requirements.
For more factory-customized sizes or samples ordered, please contact us for details.
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