Thrust Bearingss

Seal Ring

Seal Ring

Generally speaking, the primary purpose of the seal ring is to keep the oil, water and decline and thence to stamp the gas. Simply speaking, it is exploited to keep the leakage.

Although the general use is similar, different seal rings still get their particular functions. O-ring is chiefly applied for the static seal and alternating motion seal.

When it is used in the orbiting seal, it can simply be exploited in the equipment with low speed. As for the V-ring, it is frequently installed groove in the outer circle or inner circle.

Here in this clause the author will present some types of rubber seal rings in detail:

(1) V-ring
It is exploited in the alternate(a) motion. Its part is V-shape. It is rarely used alone. In normal situation, it is frequently combined with plunger ring, supporting ring and several V-seal rings. The numbers of this ring depend on the waterproofing pressure. The V-seal ring is wrought by the rubber fabric or pure rubber mold. Nitrile -butadiene rubber is frequently used as the sizing material. As for the chuck ring and supporting ring, they are frequently pressed by the hard rubber fabric or plastics. It is said that this combination is primarily applied in the following equipments, such as plunger or piston of the large equipment. Meanwhile, because this combination is characterized by the good stability and abrasive resistance and it too can prevent the seal ring into the gap, it is the better seal tool even though the functional condition is very harsh. What`s more, this call is applicable for the medium, such as hydraulic oil, water and emulsified liquid. The suitable pressure and temperature ar separately 40 MPa and -30~120 Celsius temperature.

(2) U-ring
This ring`s section is U-shape. So it is called U-ring. It can be separated into two kinds, namely rubber type and wrapped type. Generally speaking, the wrapped type is normally combined with a rubber supporting ring. This seal ring is chiefly used in the cylinder rod of a fluid cylinder and its medium is liquid oil, water and emulsible oil. Because the coated fabric has the good surface structure and can hold the ideal lubrication when the mental slides, this call is of big service to cut the clash and better the service performance. As for the pure rubber U-ring, its working condition is like to the Y-ring.

(3) Y-ring
As a sort of rubber seal ring s used in the alternating motion, Y-rubber seal ring`s section is Y shape. So it is called Y-ring for short. In normal situation, it is applied in the operating system for the mobile pressure or gas pressure. It is really elementary in construction and the strength of varnish is rather good. Its applicable working force and temperature ar separately 16MPa and -30~120 Celsius temperature.