Product Description
Water Pump Bearings Mechanic Seal
Why Choose Us?
1. More than 35 years’ professional experience in rubber sealing industry;
2. Our NBR raw material is imported from JSR, Silicone is from German WACKER, and also Viton is USA DUPONT;
3. Top quality custom rubber products that can completely meet your needs;
4. Fast production & in-time delivery that never delay your project and usage;
5. One-stop custom service and value-added service to save your time and cost;
6. OEM/ODM Services are available. We can design and produce various Non-standard Rubber Parts according to your PDF,3D or STEP drawing files;
7. All of rubber finished products are 100% inspected before shipment;
8. Have established rubber property test lab and have tensile strength machine, thermostatic oil tank, aging test machine, compression set test machine, secondary cure oven, Density test machine and so on;
9. As the gold & stable supplier for many domestic & foreign famous large enterprises;
10. Strong and perfect packing for each items:
—For air delivery, we use middle strong cartons and pack by packing belt;
—For sea delivery, we pack all the cartons by strong pallet to make sure our customers to receive the goods in perfect packing condition.
Detailed Images
Product Overviews
| Item name: | Oil Seal | ||
| Meterial: | NBR, FKM, HNBR , Viton,Silicon ,Q, EPDM, ACM, etc | ||
| Application: | Engine, Transmission, Rear Axle | ||
| Speed: | Speed Mechanical Seal | ||
| lip: | Double lips and single lip are available | ||
| Shape: | O Type | ||
| Color: | Black, brown or as you required | ||
| Pressure: | Pressure type | ||
| Working Medium: | Hydraulic Oil, Water and Dust | ||
| Payment terms: | L/C or T/T /Western Union | ||
| Trademark: | ODM, OEM | ||
| Performance: | High temperature resistance,Good oil resistance | ||
| Standard: | Nonstandard / Standard | ||
| Hardness: | 60-90 | ||
| Transport package: | Carton or as Your Required | ||
| Factory visit: | Available | ||
| Company Type | Manufacturer/Factory & Trading Company | ||
| Origin: | China(mainland) | ||
| Hscode: | 4016931000 | ||
| Supply | 500000 per/month | ||
Oil Seal Brief Introduction
Oil seal is also known as rotary shaft seal. They are often called grease, fluid or dirt seals. Oil seal is an integral part in any rotating and moving part assembly. They close spaces between stationary and moving components in mechanical equipment. An oil seal normally consists of 3 basic components: The Sealing Element (the nitrile rubber part), the Metal Case, and the Spring. It is a widely used sealing component.
Temperature: -50°C -300°C Depending On Rubber Material
Pressure: Up to 0.03 MPa
Reciprocation Speed: 0-20m/S
Medias: mineral oils, water, lubricating grease
Specification: 6-13000mm
Advantages
1.Good abrasion resistance property;
2.Good high temperature resistance and low temperature resistance property;
3.Good CZPT corrosion resistance property and climate adaptability;
4.High abrasion resistance property;
5.Low abrasion resistance property;
6.Low permanent compression deformation feature;
7. Good resilience.
Regular Sizes
| ID*OD*H mm | Type | ID*OD*H mm | Type | ID*OD*H mm | Type | ID*OD*H mm | Type |
| 6x22x8 | TC | 12x32x10 | TC | 17x30x8 | TC | 20x40x8 | TC |
| 8x14x4 | SC | 12x32x7 | TC | 17x30x10 | TC | 20x42x7 | TC |
| 8x16x4 | TC | 13x22x7 | TC | 17x30x10 | TC | 20x42x7 | TC |
| 8x16x5 | TC | 13x24x7 | SC | 17x35x10 | TC | 20x42x10 | TC |
| 8x16x7 | SC | 14x24x7 | SC | 17x35x10 | SC | 20x45x10 | TC |
| 8x19x7 | TC | 14x24x8 | TC | 17x35x5 | TC | 20x45x10 | TC |
| 8x20x7 | TC | 14x25x7 | TC | 17x35x7 | TC | 20x45x10 | SC |
| 8x22x7 | SC | 14x28x4 | TC | 17x35x8 | TC | 20x47x7 | TC |
| 8x22x8 | SC | 14x28x7 | TC | 17x40x7 | TC | 20x47x8 | TC |
| 8x22x8 | TC | 14x28x7 | TC | 17x40x10 | TC | 20x47x10 | SC |
| 9x22x7 | TC | 14x28x10 | TC | 17x40x12 | TC | 20x47x10 | TC |
| 10x19x5 | TC | 14x29x7 | TC | 18x28x5 | TC | 20x50x10 | TC |
| 10x19x6 | TC | 14x30x7 | TC | 18x30x6 | TC | 20x52x7 | TC |
| 10x19x7 | TC | 14x30x10 | TC | 18x30x7 | TC | 20x52x3 | SC |
| 10x20x8 | TC | 14x35x7 | TC | 18x30x8 | TC | 20x52x6 | SC |
| 10x22x10 | TC | 14x35x10 | SC | 18x30x10 | SC | 21x35x6 | TC |
| 10x22x10 | TC | 15x24x5 | TC | 18x30x10 | TC | 21x35x7 | TC |
| 10x22x7 | SC | 15x24x7 | TC | 18x35x10 | SC | 21x35x8 | TC |
| 10x22x8 | SC | 15x25x5 | TC | 18x35x10 | TC | 21x38x6 | TC |
| 10x22x8 | TC | 15x26x7 | TC | 18x35x7 | TC | 22x30x10 | SC |
| 10x25x5 | SC | 15x28x5 | SC | 18x40x7 | TC | 22x32x5 | SC |
| 10x25x10 | SC | 15x28x7 | TC | 18x40x10 | TC | 22x32x7 | TC |
| 10x26x4 | TC | 15x28x7 | SC | 20x30x5 | SC | 22x35x6 | TC |
| 10x26x7 | TC | 15x28x10 | SC | 20x30x5 | TC | 22x35x7 | TC |
| 10x26x7 | SC | 15x30x5 | SC | 20x30x6 | TC | 22x35x6.7 | TC |
| 10x26x8 | TC | 15x30x5 | TC | 20x30x7 | SC | 22x35x8 | TC |
| 10x28x7 | TC | 15x30x10 | TC | 20x30x7 | SC | 22x38x8 | TC |
| 10x28x10 | TC | 15x30x10 | SC | 20x30x7 | TC | 22x38x10 | SC |
| 11x19x5 | TC | 15x32x7 | TC | 20x30x8 | TC | 22x38x10 | TC |
| 12x19x3 | SC | 15x35x6 | TC | 20x30x9 | TC | 22x40x6 | TC |
| 12x20x6 | SC | 15x35x10 | TC | 20x30x10 | SC | 22x40x7 | TC |
| 12x22x5 | TC | 15x35x7 | TC | 20x32x7 | TC | 22x40x8 | TC |
| 12x22x6 | TC | 15x40x10 | SC | 20x32x7 | TC | 22x40x8 | TC |
| 12x22x7 | TC | 16x28x7 | TC | 20x35x10 | TC | 22x40x9 | TC |
| 12x22x7 | SC | 16x30x7 | TC | 20x35x10 | TC | 22x40x10 | SC |
| 12x24x7 | SC | 16x30x7.5 | TC | 20x35x5 | TC | 22x40x10 | TC |
| 12x24x7 | TC | 16x30x10 | TC | 20x35x7 | TC | 22x42x7 | TC |
| 12x25x5 | SC | 16x35x7 | TC | 20x35x7 | TC | 22x42x10 | SC |
| 12x25x7 | TC | 16x35x10 | TC | 20x35x8 | SC | 22x42x11 | TC |
| 12x25x10 | TC | 16x35x10 | TC | 20x37x7 | TC | 22x42x12 | SC |
| 12x28x7 | TC | 17x28x5 | SC | 20x37x7 | TC | 22x45x10 | TC |
| 12x28x8 | TC | 17x28x7 | TC | 20x40x10 | TC | 22x45x10 | SC |
| 12x28x10 | TC | 17x28x7 | SC | 20x40x7 | TC | 22x50x10 | TC |
| 12x30x10 | TC | 17x30x7 | TC | 20x40x7 | SC | 22x65x8 | TC |
Certifications
We have passed ROHS, ISO9001:2008 quality system certification.
Vulcanization Machine
Mold Warehouse&Equipment
Packaging & Shipping
| Size | Official size |
| Packing | A roll of 10, a bundle of 100, and finally put into the packing box |
| About the packing details for sizes, also according to your requirements. | |
| Delivery Time: | 10-20 days after payment |
| Payment Terms: | 100%TT advance payment for LC order |
| Normally, the goods will be shipping by Sea, by air or by air express according to customer’s request. | |
Our Service
As a professional manufacturer of rubber sealing products for 35 years, we offer various kinds oil seals, such as TC, TB, TA, SC, SB, SA, VC, VB, VA, KC, KB, KA, DC, and DB, also can customized based on your specific demand; Material including NBR, SILICONE, VITON,HNBR, CR, PTFE, EPDM, etc for your better choice.
FAQ
Q 1.Which Payment way is workable?
A: Irrevocable L/C, Cash, PayPal, Credit card and T/T money transfers.
B: 30% T/T deposit in advance, 70% balance before shipment after presentation of ready cargo.
C: L/C ( Irrevocable LC at sight: Order amount over USD10,000)
Q 2. What is the normal lead time for product orders?
A: Average lead times for prototype / first article are 1-2 weeks, if tooling is involved, lead time for production tooling is 10 days, average production time after sample approval is 2-3 weeks.
Q 3. What is your standard packing?
A: All the goods will be packed by carton box and loaded with pallets. Special packing method can be accepted when needed.
A2: We have various rubber compounds approved by UL, FDA,, KTW, W270, WRAS, ACS, AS4571, EN681, EN549, ROHS and REACH.
Q 4: How to select the raw compound for my application?
A: With years of experience working with a variety of material, we can help select the material that will best suit your needs while keeping material costs in mind.
Q 5: Do you use any international standards for the rubber products?
A: Yes, we mainly use ASTM D2000 standard to define the quality of the rubber materials, tolerances as per ISO3302, ISO2768, etc.
Q 6:Can you supply different color materials?
A: Yes, we can produce custom molded rubber and silicone rubber products in different colors, the color code will be required in case of an order.
What Are Screw Shaft Threads?
A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.
Coefficient of friction between the mating surfaces of a nut and a screw shaft
There are 2 types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The 2 types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.
Helix angle
In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are 2 types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in 2 stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to 6 times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.
Thread angle
The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are 2 different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.
Material
Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each 1 is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.
Self-locking features
Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the 2 materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.
