The key role of rubber seals is to prevent fluid or solid particles and other media from leaking from between the two closely connected joint surfaces while also preventing external impurities and other media from invading the internal parts of the machine and equipment, which can often be encountered in our industrial equipment, so what are the classification methods of rubber seals?

According to the type of rubber sealing ring

1. Y-type rubber sealing ring series

Y-type sealing ring is a kind of rubber sealing ring with cross-sectional Y-type, Y-type sealing ring is also a kind of lip sealing ring, Y-type rubber sealing ring is widely used in reciprocating motion sealing series, and its service life is higher than that of O-type sealing ring. Y-type sealing ring is suitable for working pressure is not more than 40MPa environment, the working temperature is -30 ~ 100 °C. Y-type sealing ring products are widely used in hydraulic, mechanical, pneumatic and other industries.

2. O-type rubber sealing ring series

O-ring sealing ring can be used as a static seal, but also as a dynamic seal, O-type sealing ring has nitrile rubber, fluoroelastomer, silicone, eppropylene rubber, perfluoroelastomer and other materials of products, widely used in a variety of machinery, resistant to various types of petroleum-based oils and a variety of chemical media, of which perfluoroelastomer can meet -60 °C - 300 °C (perfluoroelastomer FFKM through a specific way of vulcanization up to 300 degrees or more) temperature area, the use of pressure range: <10MPa (hydraulic), <1MPa (pneumatic) < 16MPa (static seal) of nitrile and gasoline resistant (90, 93, 97) expansion rate is 0.

3. U-shaped rubber sealing ring series

U-ring rubber sealing ring has a symmetrical configuration of the sealing lip, which is used for the single-acting or double-acting standard hydraulic cylinder of the piston rod or piston.

4. The cross-section of the V-shaped rubber sealing ring series

V-shaped sealing ring is V-shaped, which is also a lip-shaped sealing ring. The V-shaped sealing ring is composed of three sealing elements: support ring, sealing middle ring and pressure ring. The standard angle of V-shaped sealing rings is 90°, and 60° is also used in special occasions. The support ring is an important part of the support V-shaped sealing ring, its cross-section is thick and strong, the size is precise, the concave angle and the V-shaped sealing ring are the same (90°) or slightly larger, so that the sealing ring is stable.

Rubber seals are classified by material

1. Nitrile rubber series

nitrile rubber English abbreviation: NBR, nitrile rubber material is made by butadiene and acrylonitrile by emulsion polymerization method, nitrile rubber is mainly produced by low temperature emulsion polymerization method, excellent oil resistance, high wear resistance, better heat resistance, strong adhesion. Nitrile rubber temperature resistance -20 °C -100 °C

2. Silicone rubber series

Silicone rubber English abbreviation SIL, silicone rubber material use temperature can meet -60 °- 200 °C, products can meet the oil resistance, steam resistance, medical, edible full transparency, high strength, flame retardant, conductive silicone rubber and so on.

3, Fluoroelastomer series products

Fluorine rubber sealing ring is also called FKM material, fluoroelastomer material is widely used in automotive, shipbuilding, military, electronic and electrical appliances and other industries, working temperature -40 °C 200 °C, can withstand fuel oil, high temperature resistance, Freon, resistance to superheated water, steam and excellent chemical corrosion resistance, welcome customers to choose to customize.

4. PTFE series products

PTFE, PTFE, PTFE gasket has high temperature resistance, corrosion resistance, even at high temperature with concentrated acid, alkali or strong oxidant does not react, it has been widely used as a sealing material, suitable for pipelines, flanges, reactors, valves and containers on the sealing device. Special-shaped parts are produced according to the user's design drawings.

5. Metal rubber sealing ring

The material is metal rubber, which is a homogeneous elastic porous material, which not only has the elasticity of rubber, but also has the excellent characteristics of metal, which can work at a temperature of -150 ~ 800 ° C. At the same time, it can also withstand pressure, and has the dual role of pressure bearing and sealing within a certain range.

6. Neoprene rubber

Neoprene rubber is a synthetic rubber polymerized by neoprene rubber. It is also known as polychlorobutadiene. Due to its resistance to acids, alkalis, greases and oils, ozone, sunlight and weathering, it is versatile and can be used in a variety of harsh environments in a variety of industries. It also offers excellent resistance to bending and twisting and a wide range of temperature suitability (-40° F to 230° F, intermittent to 250° F).

7. EPDM rubber

EPDM rubber is a copolymer of ethylene and propylene. It fights damage from acids, alkalis, aging, heat, oxidants, ozone, sunlight, steam and water. It is color stable and highly durable, making it suitable for use in outdoor environments. It can withstand temperatures from -40° F to 250° F and intermittently to 275° F.

If you want to know more about the sealing ring problem, welcome everyone to pay attention to us!