O-rings
O-rings are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable, and have simple mounting requirements. They can seal 10 Mpa of pressure. The O-ring may be used in static applications or in dynamic applications where there is relative motion between the parts and the O-ring. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons.
PRESSURE
bar |
Hardness |
| 70A |
80A |
90A |
| F(mm) |
| Static seal |
≤60 |
0.2 |
0.25 |
0.3 |
| 60-100 |
0.1 |
0.2 |
0.25 |
| 100-160 |
0.05 |
0.1 |
0.2 |
| 160-250 |
|
0.05 |
0.1 |
| 250-350 |
|
|
0.05 |
| Dynamic |
≤30 |
0.2 |
0.25 |
0.3 |
| 30-60 |
1 |
0.17 |
0.2 |
| 60-80 |
|
0.1 |
0.15 |
| 80-100 |
|
|
0.1 |
| Work Temperature |
| Material |
NBR |
MVQ |
FPM/FKM |
FFKM |
| Temperature |
-30-+110ºC |
-48-+200ºC |
-20-+220ºC |
-15-+315ºC |
FKM, o-rings(Fluorocarbon)
*Service Temperature
For general type fkm the service temperature is better limited to approximately from -26 C to 232 C in static applications, though the service temperature can arrive to 275 C at short time In dynamic applications, it is suitable between -15 C and 200 C.
*Application
Because FKM has excellent resistance of high temperature, oil, solvent, flame, chemicals and weathering, it is usually applied in automotive, chemical processing, aerospace and many other industries.
NBR orings(nitrile butadiene rubber)
*Service Temperature
For NBR the service temperature can be designed from -55 C to 100 C or up to 130 C depending on differenacrylonitrile content and formula.
*Application
NBR compounds have excellent resistance to abrasion, non-polar oils and solvent, water and permeation (higher acrylonitrile content will be better). NBR also can be used in conditions of dilute acids, alkalis and salt solution at low temperatures.
Silicone Rubber o ring
*Service Temperature
For Silicones the service temperatures are from -60 C to 225 C. Some special types can be used in extreme temperature up to 300 C and down to -100 C.
*Application
Silicone rubber performs well under environmental and temperature extremes. It is usually applied in automotive and aerospace industries where flexibility and longevity are important. It is also a suitable material for parts that need food grade for food handling equipment and appliances.
Q1. Are you a factory or trading company? We have factory in Xingtai and office in Shijiazhuang, Hebei Province. Convenient Transportation. It's not far from the Zhengding international airport. We warmly welcome clients from all over the world to come to our factory for visit and cooperation.
Q2. What's your sample policy ? We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q3. Can you produce according to the samples or drawings? Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q4. What's your Delivery time ? If the good are in stock generally it is 3-5 working days after receiving your advance payment. About 7-15 working days if we have mold or 21-28 working days without mold. The specific delivery time depends on the items and quantity of your order quantity.
Q5.What's your payment terms? For sample and small order, 100% Paypal. Western Union, T/T. For bulk order, T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.
Q6. Why choose to cooperate with you? What's your advantage? 1). Strong point:We have our own factory,so the price can be competitive and the quality is reliable. 2). We can offer you a good after-sell service, prompt deliver. 3). We can provide various size and colors according to customers' requirements. 4). By long time testing, quality proved to be excellent. 5). Updated product design. 6). Advanced manufacturing process, with global standards. 7). We win by the high quality and then have a long-term business relationship.
Q7. How do you make our business long-term and good relationship? 1). We keep good quality and competitive price to ensure our customers benefit; 2). We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from. Our rubber seals are diverse and extensive, so if there is no item what you need, we encourage you to send the drawing or samples to us directly for more information.
Cathy (Sales Manager)
Hebei SPT Seals Technology Co., Ltd.
Audited Supplier 
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