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Rubber Seal Inside Pump
The rubber seal inside pump is a sealing device used to prevent leakage of the liquid inside the pump. It is usually located between the rotating shaft and the pump casing of the pump. Its main function is to provide a barrier to prevent the pumped liquid from contacting the external environment of the pump, thereby avoiding leakage and liquid contamination.
Types of rubber seals inside pumps include mechanical seals, lip seals, and packing seals. The specific seal to be selected depends on the application requirements of the pump, the type of pumped liquid, the operating conditions of the pump, and the required reliability level.
Function Of Rubber Seal Inside Pump
Sealing: They can effectively block the flow of gas in the pump, prevent air leakage, and ensure that the pump can maintain sufficient internal pressure.
Shock absorption: The seal can absorb part of the pressure shock and reduce vibration and noise during the use of the pump.
Extended service life: A good seal can prevent impurities from entering the inside of the pump, thereby reducing internal wear and extending the service life of the pump.
The sealing ring is generally made of nitrile rubber or fluorine rubber, which has excellent properties such as corrosion resistance and high-temperature resistance and can meet the use requirements of the pump.
The sealing ring needs to be inspected and maintained regularly, and worn seals should be replaced in time to ensure good sealing performance of the pump.
Application of Rubber Seal inside pump
The main rubber seals inside the pump are usually located in the following locations:
- Piston sealing ring: Located between the piston and the cylinder, it is used to seal the gas flow during the movement of the piston.
- Valve sealing ring: Located near the intake valve and exhaust valve, it is used to seal the opening and closing action of the valve.
- Joint sealing ring: Located between the pump and the external connecting pipe, it is used to seal the connection part.
- Rod seal: Located between the piston rod and the cylinder, it is used to seal the reciprocating motion of the piston rod.
- Shell sealing ring: Located at the connection part of the pump shell, it is used to seal the entire pump body.
Material Properties
| FKM | ||||
| Eigenschaften property |
Einheit unit |
Prüfmethode test method |
Prüfparameter test parameter |
Wert value |
| Härte hardness |
Shore A | DIN 53505 | 75 | |
| Dichte specific gravity |
g/cm3 | ASTM D 1817 | 1.89 | |
| Reißfestigkeit tensile strength |
MPa | DIN 53504 | S2 | 13.3 |
| Reißdehnung ultimate elongation |
% | DIN 53504 | S2 | 154.3 |
| Druckverformungsrest compression set |
% | ASTM D 395 B/1 | 70h / 150°C | 13.8 |
| Druckverformungsrest compression set |
% | ASTM D 395 B/1 | 24h / 204°C | 19.5 |
| Druckverformungsrest compression set |
% | ASTM D 395 B/1 | 70h / 200°C | 21.5 |
| Druckverformungsrest compression set |
% | ASTM D 395 B/1 | 336h / 200°C | 30 |
| Tieftemp.beständigkeit low temp. resistance |
°C | ASTM D 1329 | TR10 | -16 |
| Bending test after 24h at -35°C |
ok/nok | VW 2.8.1 p.38 | pass | |
certification
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