The sealing principle of oil-resistant sealing ring
Jul 19, 2022
Petroleum rubber sealing ring, usually called "face seal" vividly, is a device that avoids the outflow of harmful fluids. In terms of working principle, it mainly improves the sealing effect by means of the pressure of the fluid and the action of magnetic force, so as to make the sealing effect perpendicular to the rotation. The end faces of the axis keep fit and slide relative to each other, thereby improving the quality of the seal.
In principle, the petroleum rubber sealing ring used in the petroleum field is similar to the ordinary petroleum-resistant sealing ring. , the two sides slide relative to each other, and the radial flow of the medium will be blocked, and the friction pair formed at this time is the main seal of the oil-resistant sealing ring.
The downward push of the spring and the pressure of the medium will compensate for the damage of the friction pair through friction, so as to maintain the durability of the close contact between the sealing end faces.
The role of the oil-resistant sealing ring can also compensate for the gap between the ring and the shaft to avoid leakage of liquid from the gap.
A non-compensating ring auxiliary sealing ring is used between the non-compensating ring and the gland, which can prevent the medium from flowing out here. In practical applications, the auxiliary sealing ring of the oil-resistant oil-resistant sealing ring does not have a relative motion state, which is a static seal. In addition, in the selection of sealing rings, "O" rings will be selected, and gaskets can also be used for processing.
