Ningbo Tecson Sealing Technology Co.,Ltd
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Tecson Sealing Technology

Address: No.1,Huapeng Rd, Kandun District, Cixi City, Zhejiang Province, P.R.C

Tel: 0086-574-23707877

Fax: 0086-574-23707878



Rubber Gaskets Characteristic

Rubber pad with oil, acid, cold and heat, anti-aging properties, can be directly cut into various shapes of gaskets, widely used in medicine, electronics, chemicals, anti-static, fire-retardant, food and other industries.

Rubber pad in the metal flange or other connection between the two stationary surfaces of the seal between the sheet-shaped rubber products known as rubber gasket. Can be made by molding, vulcanized film can also be used to punch. Can be widely used in a variety of machinery and equipment, from the pad, sealing, cushioning and so on

In the formal terms, the commonly used rubber washers arehers: rubber flat washers, rubber O-rings, plastic flat washers, polytetrafluoroethylene gaskets, asbestos rubber washers, metal flat washers, metal shaped washers, metal encased gaskets, Winding washers and so on.

(1) rubber flat washers: easy deformation, pressing effortlessly, but the pressure, temperature resistance are poor, only for low pressure, the temperature is not high places. Natural rubber has a certain acid and alkali properties, the use of temperature should not exceed 60 ℃; chloroprene rubber can also be resistant to some acid and alkali, the use of temperature 80 ℃; nitrile rubber oil, available to 80 ℃; fluorine rubber corrosion resistance is good, Temperature performance is also stronger than the general rubber, can be used in the 150 ℃ medium.

(2) rubber sealing gasket: cross-sectional shape is round, there is a certain self-tight effect, the sealing effect is better than the flat washer, the clamping force is smaller.

From the material point of view, the main products of rubber pad are: silicone pad, nitrile rubber pad, fluorine rubber pad, other rubber pads. Rubber gasket with oil, acid, cold and heat, anti-aging properties, can be directly cut into various shapes of gaskets, widely used in medicine, electronics, chemicals, anti-static, fire-retardant, food and other industries.

Silicone Rubber

Has a high resistance to high and low temperature performance, in the -70 ℃ - +260 ℃ temperature range to maintain a good use of elasticity, ozone resistance, weather resistance, should be used in the thermomechanical seal gasket. Non-toxic can produce insulation, insulation products and medical rubber products. At the same time with waterproof, flame retardant, high temperature, conductive, wear, oil and other excellent performance, widely used in machinery, electronics, plumbing and other industries.

Nitrile rubber

NBR (Nitrile-Butadiene Rubber) is a polymer made of butadiene and acrylonitrile by emulsion copolymerization, known for its excellent oil resistance, but also has good abrasion resistance, aging resistance and air tightness. And thus widely used in the rubber industry.


With high temperature resistance, can be -20 ℃ - +200 ℃ environment, strong antioxidant, oil, acid and alkali. Usually used in high temperature, high vacuum and high pressure environment, but also suitable for oil environment, widely used in petroleum, chemical, aviation, aerospace and other departments.


Neoprene, natural rubber, EPDM rubber, acrylic adhesive and other special rubber. With oil, acid, alkali, wear resistance, high resistance, low temperature and other characteristics.

Material selection: rubber gasket material is usually NBR (nitrile rubber), SBR (SBR), HNBR (hydrogenated nitrile rubber), EPDM (EPDM), SILICONE (silica gel), VITON (fluorine plastic) , CR (neoprene), FFKM (perfluoro rubber), and the like.

Rubber gasket material used to NBR nitrile rubber used the most common, the most cost-effective. The use of FFKM perfluoro rubber gaskets is generally in the more sophisticated areas, such as space rocket areas. Because its price is quite expensive, but its performance is excellent, can be more than many metal materials.

Combination of gasket

It is made of rubber ring and metal ring as a whole, and is used to seal the sealing ring of thread and flange connection. The ring includes a metal ring and a rubber gasket. Metal ring rust treatment, rubber ring generally use oil nitrile rubber or fluorine rubber. Combination pad with metric and imperial sizes, with standard JB982-77 combination of metal pad and rubber combination of the form. Combination sealing gasket for threaded pipe fittings and plug seal, it is generally used with the card-type pipe joints, used to block the mouth, mainly for hydraulic valve pipe fittings threaded connection of the end of the static seal, applicable to the United Kingdom, the United States Inch thread and the French, German standard metric threaded connection of the end of the static seal. Combination sealing gasket according to the structure can be divided into A-type, B-type; according to the different packages can be divided into all-inclusive,