National Oil seal

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Oil Seal

We're professional to produce various of Rubber products with different material and have exported for 20 years.

we can provide you the all kinds of oil seal with high quality and reasonable price.

Our target is "All Customers first, Quality First, and Credit First"

This is the detail of our oil seal:

1.seal material:

NBR,HNBR,PTEE,FPM,MVQ,EPDM,PTFE,and so on

2.seal application:

trains,automobile,motocycles,trucks,buses,agricutural machinery and any equipments

3.seal certification:

GB/T19001-2000-ISO9001: 2000 standard

4.seal production control:

prouduced by priecise CNC machine

5.seal strong point:

we have our own mold center and engineer, can develop all kinds of high tech requireds.

Powerful mold quantity in stock.

Most popular type stytle including TC, TB, SC, SBC, TBG...


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Q:What kind of seal is the dust sealing ring?
Material features of dust ringNow most of the dust ring is formed by rubber material processing, the material dust ring is the biggest characteristic of dry friction, hence the need for the rubber material has excellent wear resistance, and low compression permanent deformation. In recent years, dust and other materials seal slowly up, such as PTFE and O ring combination, its sealing effect is very ideal, but you can use a long time, now the place is more and more.
Q:How should the piston rings for piston wear be chosen? What is the national standard?
Two, HNBR hydrogenated nitrile rubber sealing ring: with excellent corrosion resistance, tear resistance and compression deformation characteristics, ozone resistance, sun resistance, weather resistance better. Better abrasion resistance than nbr. The utility model is suitable for washing machines, automobile engine systems and refrigeration systems using new environmental protection refrigerant R134a. Not recommended for use in alcohols, esters, or aromatic solutions. The general use temperature range is -40~150 degrees centigrade.Three, SIL silicone rubber sealing ring: with excellent heat resistance, cold resistance, ozone resistance, atmospheric aging resistance. Has good insulation performance. But the tensile strength is inferior to that of ordinary rubber and has no oil resistance. Applicable to household appliances, such as electric water heaters, electric irons, microwave ovens, etc.. The utility model is also suitable for various articles which have contact with human bodies, such as a kettle, a water dispenser, etc.. Not recommended for use in most concentrated solvents, oils, concentrated acids, and sodium hydroxide. The general use temperature range is -55~250 degrees centigrade.
Q:How about the sealing ring for the piston rod seal?
The composite sealing ring, such as K type stepseal, it consists of two distinct components: one is to join the ladder bronze seal filler with PTFE (main seal), the other is a O shaped sealing ring (elastic element and side seal). The combination sealing ring (K type) has the characteristics of low friction resistance, no creeping at the start, low leakage and wear resistance. The combination of the sealing ring avoids the contact between the metal, improves the supporting ability, bears the certain lateral force, the small friction force, and is suitable for the high voltage and high speed system, and has been proved by the experiment.
Q:What are the requirements of bearings for sealing?
The sealing methods of rolling bearings can be divided into two categories: contact seal and non-contact type.Contact sealing, felt ring seal, sealing ring, sealing, etc..
Q:In the seal of hydraulic cylinder, the O-ring and Y ring are sealed well
It all depends.Minor changes in the shape of the same device in the same situation (environment)Its role will not be the same
Q:What are the seals? What role can they each play?
Role of seals:All seals are used to prevent fluid or solid particles from leaking between adjacent surfaces and to prevent external impurities such as dust and moisture from invading the inside of the machine.
Q:Is the piston on the hydraulic cylinder sealed by shaft or by hole?
Material: TPU, CPU, polyurethane rubber product hardness: HS85 + 2 ~ A working temperature: +120 degrees TPU:- working pressure 40 ~ +80 ~ CPU:-40: C = 32Mpa.Working medium: hydraulic oil, emulsion.
Q:Is it good to use NBR or EPDM for sealing parts?
For example, EPDM is used to produce seals as follows:1, water pipe seals; 2, heat exchanger rubber seals; 3, capacitor seals, and so on;
Q:Does the PTFE seal contain plasticizer? Does the silicone seal require temperature during use?
Silicone rubber is much better than ordinary rubber in heat resistance. It can be used almost always at 150 degrees without performance changes. It can be used continuously for 10000 hours at 200 degrees, and can be used for a period of time at 350 degrees. The utility model is widely used for occasions requiring heat resistance, a thermos bottle sealing ring and a heat-resistant handle of a pressure cooker ring.
Q:So in today's world, mechanical seal is the most important shaft seal in these equipment. The mechanical seal is also called the seal, in the relevant national standard is defined as: "by at least a pair of end faces perpendicular to the axis of rotation of the fluid pressure and the elasticity of compensation organizations (or magnetic) device and the role of the coordination of auxiliary seals to keep up with the relative sliding to prevent fluid leakage. "
Note: 1) this announcement is only for APS audit materials submitted. Whether to apply for university applications, students need to contact the university to verify.2) the seal needs the university special envelope seal, must have the University seal in the seal. And the materials should be stamped. Pay attention to sealing, must not have traces of open, otherwise invalid.3) bilingual can be Chinese, English, or german. In addition, it is important to note that the translation of the submitted transcripts is best consistent with the language used in the review. This is helpful for the audit interview. It can be a Chinese and a foreign language translation

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