Gasket O Ring DN250 Factory Quality Low Price

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500 pc
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100000 pc/month

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Product Description:

1.Description of Gasket :
Ginseal Spiral-wound gaskets comprise a mix of metallic and filler ma- terial. Generally, the gasket has a metal (normally carbon rich or stainless steel) wound outwards in a circular spiral (other shapes are possible) with the filler material (generally a flex- ible graphite) wound in the same manner but starting from the opposing side. This results in alternating layers of filler and metal. The filler material in these gaskets acts as the sealing element, with the metal providing structural support.

2.Features of Gasket :
• Wide range of applicable working condition,high temperature and high pressure resistance,applicable to super low temperature and vacuum condition.Chemical resistant gasket is available under various medium,through change of composition of gasket.
• Strong stress compensation,stable and reliable sealing performance even under frequent pressure fluctuation condition.
• Perfect sealing performance.
• Normal requirement of flange surface finishing which contact with gasket.
• Easy installation and low pre-tightening stress of gasket.
• Heat treatment industry for furnace parts, fans, tube hangers, and baskets and trays to hold small parts.
• Chemical process industry to contain hot concentrated acids, ammonia, and sulfur dioxide.
3.Gasket Images:

Gasket O Ring DN250 Factory Quality Low Price

Gasket O Ring DN250 Factory Quality Low Price

4.Specifications of the Gasket:
1.A good compression ratio and elasticity.
2.With plastic appropriate, after pressing can adapt to the sealing surface and sealing surface uneven fill the gap, to ensure good sealing performance with the temperature and pressure in the system of alternating case.
3.With excellent corrosion resistance, not to be damaged in some extreme medium, does not have the expansion and contraction.
4.Under the condition of high temperature softening, does not creep; under the condition of low temperature hardening, does not shrink.
5.Have sufficient strength, when external load conditions, not be crushed; at high temperature, not blown out.
Ask 1: Why some supplier give me the price much cheaper than you?
Answer:1.They wanna attract your attention,while you contact with them,they would raise the price by any reason.
               2.They willn't provide the high qualities to you cause it had the cheap price.
Ask 2:What the MOQ?
Answer:The MOQ should reach 800 kilograms
Ask 3:Should i pay for it If some product need molds?
Answer:I'm afraid you should pay for it,However,We would return it back when we get the first order.
Ask 4:Your price seems higher than others.
Answer:As you know,Price equals qualities.We have faith in our qualites.But it must be in the acceptable range

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Q:How can rubber be made into rubber when it is made?
Rubber made of rubber products, to be mixed, vulcanized, trimming and many other processes to make rubber products, is a complex processing plant produced.
Q:How can there be a crack in the rubber ring?
Problems in production:1) formulation design, oil or resin less material or caused by excessive or high temperature, poor liquidity and other reasons!2) when manufacturing, the product appears the hole which the exhaust is not good3) the raw material is too thick during production, and cracks are also caused.
Q:Comparison of physical properties of HNBR rubber material with other rubber materials
HNBR has a high temperature resistance of 130~180 degrees, cold resistance of -55 ~ -38 degrees, and good mechanical properties, compared with other polymers, can meet the requirements of the automotive industry. HNBR with ZnO/ methacrylate (MAA) can be used to make V-belt, triangular V-belt, multi base rubber, vibration isolator and so on. It can also prepare sealing ring, sealing element, heat resisting tube and so on. In oil drilling, rubber products are required to withstand high temperature, high pressure, acid, amines, H2S, CO2, CH4 and other tests of steam. The products prepared by HNBR can be acid resistant, oil resistant and solvent resistant. With the ZnO/MAA HNBR reinforcement can be used for the production of drilling mud pump piston and protection box. In addition, the beating method HNBR can be used as a sealing washer washer made of paper oil industry and automobile industry. HNBR heat and radiation resistance properties than silicon rubber, fluorine rubber, poly four vinyl chloride is better, suitable for all kinds of rubber seals for power station, is also used as a hydraulic pipe, hydraulic seals, power station for cable sheath, can also be used for printing and fabric roller, weapons components and aerospace seals, cover, fuel capsule; HNBR latex can be used as a surface coating (painting), textile, paper, leather, metal, ceramic fiber, non-woven adhesive, and foam rubber, latex impregnated products etc.. In addition, with ZnO/MAA, peroxide and high wear furnace HNBR, its comprehensive performance is better than ordinary HNBR.
Q:What is the harm of rubber to the human body?
Depends on what rubber, and see what the rubber does. Some rubber additives used more, the processing of the flavor is more heavy, more toxic. If you do containers, try not to use it to store people's food, so as not to volatilize, causing harmful substances volatilization.Guidance opinion:Some of the rubber itself is no poison, and basically additive little, there will be no toxicity. Such as silicone rubber, but also can do food grade, used in tableware, artificial organs and so on.Rubber has a component called aniline, which contains a special odor.Harm: 1, blood damage, 2, liver damage, 3, urinary system damage, 4, nervous system damage, 5, skin damage and sensitization, skin itching, 6, crystal damage, 7 carcinogenic, teratogenic.Measures: keep the air circulation in the work place; the adsorption of poisonous gas; do personal protection; strengthen the monitoring of toxic and harmful substances in the workplaces; strengthen the occupational examination.May wear the gas mask, has certain function.
Q:What are the bridge rubber air bags used for?
Note: when the inner mold of the airbag is used, it is necessary to brush the isolating agent to reduce the pumping resistance. The airbag does not allow the oil to replace the isolating agent. On the one hand, the oil will erode the rubber, and the other oil will contaminate the reinforcement. It is ideal to dilute with soap water as a release agent. Soap and water ratio is about 1:20.
Q:How do soft silicone rubber print?
Replace the thermal grease (thermal paste) and mica (insulation) products two yuan of cooling system. The thermal conductivity of this product is 0.5-5.0W/mK, while the thermal conductivity of air is only 0.03w/mk. The resistance to breakdown is above 3000 volts, and insulation requirements can be used in most electronic devices.
Q:What is the pressure on rubber products during vulcanization?
The vulcanization pressure in the process of processing is the pressure on the unit area in the process of vulcanization. In general, in addition to rubberized products, other rubber products are required to exert some pressure during vulcanization. Vulcanization pressure mainly has the following points:1) prevent the bubbles from forming bubbles in the process of vulcanization and improve the compactness of the products.2) the filling flow of the filling material is driven by the power to fill the mold cavity.3) to improve the adhesion between rubber and cord and the bending resistance of products.4) improve the physical and mechanical properties of vulcanized rubber (i.e. products).
Q:What about rubber molding, foaming and layering?
Return the glue (the rubber has not been used up after heat treatmentThe glue and the new rubber are mixed together to heat up, and the remaining glue is called a return glue. When the mixture is mixed with the new rubber, the mixture is uneven and the degree of vulcanization is not uniform, resulting in delamination
Q:Can PVC blend with rubber?
PVC can be well compatible with NBR and difficult to use with other glue.
Q:What are the differences in the properties of neoprene models?
Good physical and mechanical properties, oil resistance, heat resistance, fire resistance, sunlight resistance, ozone resistance, acid and alkali resistance, chemical reagents. The disadvantage is cold resistance and poor storage stability. With high tensile strength, elongation and reversible crystallinity, good adhesion. Aging resistance, heat resistance. Excellent oil resistance and chemical resistance. Weatherability and ozone resistance are second only to that of ethylene propylene rubber and butyl rubber. The heat resistance and the nitrile rubber, the decomposition temperature of 230~260 DEG C, short-term resistance at 80~100 DEG 120~150 DEG C, can be used for a long time, with a certain flame retardancy. Oil resistance second only to nbr. Good resistance to inorganic acids and alkalis. Cold resistance is slightly worse, electrical insulation is poor. Rubber poor storage stability, will have a "sulfur" phenomenon, Mooney viscosity increased, hard rubber. Foreign brands are: AD 1, 30 (USA), A-90 (Japan), 320 (Germany), and MA40S (France).

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