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Application of TPU in Sealing ring
The Sealing ring is an annular cover consisting of one or more parts, fixed on one ring of the shaft and bearing, in contact with another ring or washer, or forming a narrow labyrinth gap to isolate oil and gas, prevent Oil spills or passes through, preventing the intrusion of foreign objects. At the same time, it can also bear pressure, and has the dual functions of pressure bearing and sealing within a certain range.
1. The sealing ring should have good sealing performance within the working pressure and a certain temperature range. The sealing ring made of TPU material can automatically improve the sealing performance with the increase of pressure.
2. The friction between the TPU sealing ring device and the moving parts should be small, and the friction coefficient should be stable.
3. TPU material sealing ring has strong corrosion resistance, not easy to age, long service life, good wear resistance, and can be automatically compensated to a certain extent after wear.
4. The structure is simple, the use and maintenance are convenient, and the service life of the sealing ring is longer.
Type of Seal
For sealing pistons in reciprocating hydraulic cylinders.
Axial seals are used to prevent internal grease or oil from leaking out, and also to prevent the intrusion of external splashing water or dust.
Used in the manufacture of reciprocating seals in hydraulic systems of construction machinery,
Static and reciprocating seals for rotary motion.
Protection seals for hydraulic oil, emulsion and water mixtures
Sealing rings for hydropneumatic systems in liquid and gaseous working media such as air, water, oil, etc.
Dust Seal Ring for oil cylinder, mechanical oil cylinder piston rod or valve stem under severe working conditions of -40℃~+120℃
When the working temperature is -100℃~+200℃ and the cylinder pressure is greater than 10MPa, it is used as a retaining ring for the sealing ring.
It is used for sealing of various process pipelines such as petroleum, Chemical Industry, metallurgy, papermaking, sewage, seawater desalination, food brewing, beverage processing, medicine and so on.
In addition to the general requirements for TPU sealing ring materials, the sealing ring should also pay attention to the following conditions: (1) elasticity and elasticity; (2) appropriate mechanical strength, including expansion strength, elongation, tear strength, etc. (3) The performance is stable, it is not easy to expand, and the thermal shrinkage effect is small (Joule effect). (4) It is easy to process and form, and can keep precise dimensions. (5) Do not corrode the contact surface or pollute the medium. The most suitable and common material to meet the above requirements is rubber, so most sealing rings are made of rubber or TPU material. There are many kinds of rubber. Differences in materials such as silicone, TPU, TPE, TPEE, etc. will also determine the sealing effect of the sealing ring. The reason for choosing TPU as the sealing ring is that TPU has a certain rebound effect, oil resistance, acid and alkali resistance, performance is better than other materials, and the use time is longer.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.