Share on (1600474772116):

The O-ring seal is a circular ring, also known as an O-ring. The O-ring seal is suitable for installation on various mechanical devices. It performs well in environments with oil, acids and alkalis, wear, and chemical erosion, providing excellent sealing and vibration reduction. Therefore, the O-ring seal is the most widely used type of seal in hydraulic and pneumatic transmission systems. It functions to seal under specified temperatures, pressures, and different liquid and gas media, whether in a static or moving state.
The most common O-ring materials are nitrile rubber /NBR, hydrogenated nitrile rubber/HNBR, fluororubber/FKM, silicone rubber/SIL, chloroprene rubber/CR, perfluorinated ether rubber/FFKM and polyacrylate rubber/ACM, polytetrafluoroethylene/PTFE, etc.
How to Choose the right material of O Rings
| Materials | Applicable Media | Temperature(C) | Remarks | |
| Motive | Static | |||
| NBR | Mineral oil, gasoline, benzene | 80 | -30 ~120 | - |
| CR | Air, water, oxygen | 80 | - 40 ~120 | - |
| IIR | Animal and vegetable oil, weak acid, weak alkali | 80 | -30~110 | Permanent deformation is large, not suitable for mineral oil |
| SBR | Alkali,Animal anf vegetable oil,water,Air | 80 | -30 ~100 | Mineral oil is not applicable |
| NR | Water, weak base, weak acid | 60 | -30 ~90 | Mineral oil is not applicable |
| SIL | High and low temperature oil, mineral oil, animal and vegetable oil, oxygen, weak acid, weak alkali | - 60 ~ 260 | - 60 ~ 260 | Steam is not applicable, and the moving parts should be avoided |
| PU | Water, oil | 60 | -30 ~80 | Wear-resistant, but should avoid high speed application |
| FKM | Hot oil, steam, air, inorganic acid, halogen solvents | 150 | -20 ~200 | - |
| PTFE | Acids, bases, various solvents | - | - 180 ~280 | Not suitable for moving parts |


O-ring seal, its cross section is circular, simple shape, easy to manufacture, low cost, the use temperature range can be from-60℃ to 200℃. Using different materials of O-ring, most can meet the requirements of various media and various motion conditions.
O-ring has the following characteristics:
1. The sealing part has a simple structure, compact installation part and light weight;
2. It has self-sealing function, and often only one sealing element can complete the sealing, with good sealing performance, and can almost achieve no leakage when used as static sealing;
3. When used in reciprocating motion, the sealing performance is unchanged in the reciprocating stroke, and the leakage is very small, only when the speed is high, there is some leakage;
4. The friction resistance of the movement is very small, and it can also adapt to the situation of pressure alternation;
5. The size and groove are standardized, low cost, easy to use and outsourced.
Rubber O ring pictures showing



O-rings are suitable for installation on various mechanical equipment, providing sealing in specified temperatures and pressures, as well as different liquid and gas media, whether in stationary or moving states. They play a crucial role in sealing. O-rings are widely used in machine tools, ships, automobiles, aerospace equipment, metallurgical machinery, chemical machinery, construction machinery, mining machinery, oil machinery, plastic machinery, agricultural machinery, and various instruments and meters.
O-ring is mainly used for static seal and reciprocating motion seal. When used for rotary motion seal, it is limited to low-speed rotary sealing devices. O-ring is generally installed in the groove with rectangular section on the outer or inner circle to play a sealing role.
O-ring seal still plays a good role in sealing and vibration reduction in oil, acid and alkali, wear and chemical erosion environment.

Zhenjiang Hansa Sealing Materials Co., Ltd., we are primarily an export-oriented company dedicated to providing customers with high-quality products and superior service. Our factory mainly produces a variety of plastic profiles including PTFE, UHMW-PE, nylon, PP, POM, PEEK and so on, as well as custom-made products based on samples or drawings.
Customer first, integrity foremost,win-win cooperation and joint progress is our corporate culture. If you have any requirements or questions about our products or services, please contact us at any time.


Q1: Are factory or trading company?
A1:We are the leading manufacturer who have many years experience since 2010.
Q2:What's your main products?
A2:Our factory mainly produces a variety of plastic profiles including PTFE, UHMW-PE, nylon, PP, POM, PEEK and so on, as well as custom-made products based on samples or drawings.
Q3:Can I get sample?
A3:Yes, We can offer free sample but express charge by your side.
Q4:What’s the payment term?
A4:T/T,Western Union,Paypal are applicable for us,We can offer other payment methods based on your needs.
Q5:What’s the delivery time?
A5:Normal model 2-5days, because we have ability to do the stock. For big order,it takes about 10-15days.
Q6:How to place the order?
A6:You can send us email or inquiry at Alibaba directly.
Q7:Would you have a discount if l have a large order?
A7:Yes we could offer different discount according to your order quantity.
New products from manufacturers at wholesale prices