What are the classifications of rubber seals?

What are the classifications of rubber seals? 

The rubber seal is an annular cover composed of one or several parts, which is fixed on a ring or washer of the bearing and contacts another ring or washer or forms a narrow labyrinth gap to prevent the leakage of lubricating oil and the intrusion of foreign objects.

Rubber seal classification

1. Classified by category

1. O type sealing ring series

It has products made of fluorine rubber, nitrile rubber, silica gel, ethylene propylene rubber, double fluorine rubber, etc., which are widely used in various machinery, and are resistant to various petroleum-based oils and various chemical media: the use of non-rubber can meet Temperature range of 60°C-+200°C (double fluorine rubber FFKM can reach more than 300 degrees after a specific curing method), and the operating pressure range:

2. Y-shaped sealing ring

Products made of fluorine rubber, nitrile rubber, chloro rubber and other materials are widely used in hydraulic, mechanical, pneumatic and other industries. The resistant petroleum base oil has excellent abrasion resistance, and the selection of different types of rubber can meet the temperature range of -60℃-+200℃.

3. V-shaped sealing ring

It is an axially acting elastic rubber sealing ring, used as a pressureless seal of the rotating shaft. The sealing lip has good mobility and adaptability, can compensate for larger tolerances and angle deviations, can prevent internal grease or oil from leaking out, and can also prevent external splashing or dust from intruding.

4. YX type sealing ring for hole

Brief description of product use: used for sealing pistons in reciprocating hydraulic cylinders.

Scope of application:

TPU: General hydraulic cylinders, general equipment hydraulic cylinders.

CPU: Hydraulic cylinders for construction machinery and oil cylinders for high temperature and high pressure.

Material: polyurethane TPU, CPU, rubber.

Product hardness: HS85±2°A.

Operating temperature:

TPU: -40～+80℃;

CPU: -40～+120℃;

Working pressure: ≤32Mpa;

Working medium: hydraulic oil, emulsion.

5. Retaining ring for YX type hole:

Brief description of product usage: This standard applies to the use of YX type seals when the working pressure of the cylinder is greater than 16MPa, or when the cylinder is eccentrically stressed to protect the seal.

Working temperature: -40～+100℃;

Working medium: hydraulic oil, emulsion, water;

Product hardness: HS92±5A;

Material: Teflon.