China manufacturer Demaisi 150*176*15.5/16 Rwdr-Kassette Oil Seal 12018750b for CZPT CZPT Spare Parts with Good quality

Product Description


The cassette seals are generally made up of a sleeve, sealing lip with a spring and several anti-dust lips integrated into a labyrinth system to protect against external pollution, and are distinguished by greater system reliability and longevity. Furthermore, their friction surface, which has been adjusted and finished beforehand, does not require any shaft maintenance during replacement.

a.Metal/rubber outside diameter
The cassette seal’s outside diameter design provides better static sealing against low-or high-viscosity fluids, limited bounce-back effect, accurate positioning and a solid foundation for the seal in its housing, as well as better heat dispersion.
b.Pre-lubricated areas
Depending on the application, a compatible lubricant is applied to different areas inside the cassette seal, whichenables better heat dispersion, lubricates addtional sealing lips during friction and prevents the entry of external pollutants.
c.Rubber bumpers
Rubber bumpers correctly position the sleeve with the primary sealing lip. They also ensure an appropriate level of restriction or interference using various additional barriers, and reduce the entry of external pollutants into the system.
d.Primary sealing lip
The primary sealing lip is pre-stressed by a spring, which guarantees optimal sealing against media when in rotation, whilst compensating for potential shaft run-out and eccentricity faulis. The sealing lip’s optimised geometries ensure reduced friction and longer product lifespan.
e.Metal/rubber inside diameter
The cassette seal’s inside diameter interior is designed to offer better static sealing against low-or high-viscosity fluids, and reduce installation effort during assembly.
f.Curved metal part
The curved metal cage on the outside of the cassette seal allows for easy assembly and disassembly, and prevents the seal from coming apart during transport or maintenance operations.
g.Xihu (West Lake) Dis.ctless barrier
The rubber baffle is a contactless barrier that limits the entry of external pollutants.
h.Additional anti-pollution sealing lips
Additional sealing lips can be radial or axial, depending on the cassette seal profiles and additional barriers against external pollutants.
i.Ground metal cage
The metal part of the cage that is in contact with the sealing lip(s) is ground in order to improve surface toughness, reduce friction and increase the seal’s lifespan.

1 12015223B 25*52*12 26 12017098B 127*160*15.5/17.5
2 57133115B 25*52*11.5/18 27 12016448B 130*160*14.5/16
3 12017571B 35*60*13/14.5 28 12019619B 136.8*165*13
4   35*62*13.5/14 29 12016688B 140*170*14.5/16
5 12019775B 35*65*14.5/17 30   142*170*13.5/16
6 12014654B 35*92/98*13/27          31 12571496B 142*170*15/16
7 12571571B 37*85*15/15.5 32 12019116B 145*175*14.5/15.5
8 12015392B 45*70*14/17 33   148*170*14
9   47*75*16.5/17.5 34 12013126B 150*176*15.5/16
10 12571351B 48*75*14/17 35 12018035B 150*180*14.5/16
11 12018678B 53.2*78*13/14 36 12018750B 150.15*178*13/16
12 12016792B 55*80*12.5/14 37 12014852B 155*190*17.5/19
13 12018036B 56*80*13/14.5 38 12016391B 155*195*16.5/18
14 12019512b 60*90*14/16.3 39   160*191.5*16.5
15 12015928B 65*90*13/14.5 40 12019930B 165*190*15.5/16.5
16 12018849B 65*92*10/15 41 12015149B 165*195*16.5/18
17 12018338B 70*95*13/14.5 42 57127784B 167.8*198*13/14.5
18 12571817B 70*100*12.5/16 43 12019084B 170*200*15/16
19 12019120B 75*100*13/14.5 44 12018107B 178*208*16/18
20 12017293B 85*110*13/14.5 45 1257108B 189.8*230*15.5/17
21 12014492B 110*140*14.5/16 46 12016896B 190*215*15.5/17
22 12017210B 111*146*13.5/14.5 47 12015136B 190*220*16/18
23 12019553B 120*150*14/15.5 48 12019114B 210*240*16/18
24 12018572B 120*160*15.5/17 49 1257144B 220*265*19/21 
25 57125740B 121.8*150*13/15 50 12019336B 235*270*20/22

1:Why more and more customers choose S&P rubber seal?

  • We are specialized in the manufacturing and exporting of high quality seals.  Choose us is to choose the rest assured.
  • We mainly produces various types, specifications, models of the seals of high precision mechanical components.  We have all the specifications of what you need to help you achieve one-stop shopping, save time, effort and worry.
  • We has long been a domestic and international numerous oil seal CZPT supply business of manufacturer, service for 15 years, we have professional talents and product research and development equipment, our research and development ability, is the domestic first-class oil seal manufacturer home.
  • We provide one-stop sealing solutions, and provide a full range of services, from product design, mold development, stamping skeleton, vulcanization molding, clip, screening and packaging,. The entire process would take a shorter, more stable quality.

2: What is your packing?

  • Paper roller: 10pcs in one roller, 200 rollers in one carton
  • PP bag:     50 or 100pcs in one bag,15 or 30 bags in one carton
  • Box:        1pcto a box
  • According to customer’s request. 
    3:Date of Delivery
  • 1-2 days if goods in stock.
  • 10-15 days if goods out of stock with molding.
  • 25-30 days if goods out of stock without molding.

4:Payment Term:

  • 30% T/T in advance and 70% balance paid before shipment.
  • West union
  • Paypal
  • others for discussion

5: Can you produce according to the samples?

  • We have our own brand of DEMAISI.
  • We accept ODM and OEM at the same time.We have the ability to provide the sample of the products of decomposition, develop the mould, for production.

6: How do you make our business long-term and good relationship?

  • We will continue to improve the process control, and improve the quality of our products and work to reduce operating costs and provide a competitive price for customers, to ensure that customers benefit
  • We seriously treat every customer, in good faith with them to do business, make friends, no matter how much volume, we will provide a full range of services, one-stop sealed solution.

What You Should Know About Axle Shafts

There are several things you should know about axle shafts. These include what materials they’re made of, how they’re constructed, and the signs of wear and tear. Read on to learn more about axle shafts and how to properly maintain them. Axle shafts are a crucial part of any vehicle. But how can you tell if 1 is worn out? Here are some tips that can help you determine whether it’s time to replace it.

Materials used for axle shafts

When it comes to materials used in axle shafts, there are 2 common types of materials. One is carbon fiber, which is relatively uncommon for linear applications. Carbon fiber shafting is produced by CZPT(r). The main benefit of carbon fiber shafting is its ultra-low weight. A carbon fiber shaft of 20mm diameter weighs just 0.17kg, as opposed to 2.46kg for a steel shaft of the same size.
The other type of material used in axle shafts is forged steel. This material is strong, but it is difficult to machine. The resulting material has residual stresses, voids, and hard spots that make it unsuitable for some applications. A forged steel shaft will not be able to be refinished to its original dimensions. In such cases, the shaft must be machined down to reduce the material’s hardness.
Alternatively, you can choose to purchase a through-hardened shaft. These types of axle shafts are suitable for light cars and those that use single bearings on their hub. However, the increased diameter of the axle shaft will result in less resistance to shock loads and torsional forces. For these applications, it is best to use medium-carbon alloy steel (MCA), which contains nickel and chromium. In addition, you may also need to jack up your vehicle to replace the axle shaft.
The spline features of the axle shaft must mate with the spline feature on the axle assembly. The spline feature has a slight curve that optimizes contact surface area and distribution of load. The process involves hobbing and rolling, and it requires special tooling to form this profile. However, it is important to note that an axle shaft with a cut spline will have a 30% smaller diameter than the corresponding 1 with an involute profile.
Another common material is the 300M alloy, which is a modified 4340 chromoly. This alloy provides additional strength, but is more prone to cracking. For this reason, this alloy isn’t suited for street-driven vehicles. Axle shafts made from this alloy are magnaflushed to detect cracks before they cause catastrophic failure. This heat treatment is not as effective as the other materials, but it is still a good choice for axle shafts.


There are 3 basic types of axle shafts: fully floating, three-quarter floating, and semi-floating. Depending on how the shaft is used, the axles can be either stationary or fully floating. Fully floating axle shafts are most common, but there are exceptions. Axle shafts may also be floating or stationary, or they may be fixed. When they are stationary, they are known as non-floating axles.
Different alloys have different properties. High-carbon steels are harder than low-carbon steels, while medium-carbon steels are less ductile. Medium-carbon steel is often used in axle shafts. Some shafts contain additional metals, including silicon, nickel, and copper, for case hardening. High-carbon steels are preferred over low-carbon steels. Axle shafts with high carbon content often have better heat-treatability than OE ones.
A semi-floating axle shaft has a single bearing between the hub and casing, relieving the main shear stress on the shaft but must still withstand other stresses. A half shaft needs to withstand bending loads from side thrust during cornering while transmitting driving torque. A three-quarter floating axle shaft is typically fitted to commercial vehicles that are more capable of handling higher axle loads and torque. However, it is possible to replace or upgrade the axle shaft with a replacement axle shaft, but this will require jacking the vehicle and removing the studs.
A half-floating axle is an alternative to a fixed-length rear axle. This axle design is ideal for mid-size trucks. It supports the weight of the mid-size truck and may support mid-size trucks with high towing capacities. The axle housing supports the inner end of the axle and also takes up the end thrust from the vehicle’s tires. A three-quarter floating axle, on the other hand, is a complex type that is not as simple as a semi-floating axle.
Axle shafts are heavy-duty load-bearing components that transmit rotational force from the rear differential gearbox to the rear wheels. The half shaft and the axle casing support the road wheel. Below is a diagram of different forces that can occur in the axle assembly depending on operating conditions. The total weight of the vehicle’s rear can exert a bending action on the half shaft, and the overhanging section of the shaft can be subject to a shearing force.

Symptoms of wear out

The constant velocity axle, also called the half shaft, transmits power from the transmission to the wheels, allowing the vehicle to move forward. When it fails, it can result in many problems. Here are 4 common symptoms of a bad CV axle:
Bad vibrations: If you notice any sort of abnormal vibration while driving, this may be a sign of axle damage. Vibrations may accompany a strange noise coming from under the vehicle. You may also notice tire wobble. It is important to repair this problem as it could be harmful to your car’s handling and comfort. A damaged axle is generally accompanied by other problems, including a weak braking response.
A creaking or popping sound: If you hear this noise when turning your vehicle, you probably have a worn out CV axle. When the CV joints lose their balance, the driveshaft is no longer supported by the U-joints. This can cause a lot of vibrations, which can reduce your vehicle’s comfort and safety. Fortunately, there are easy ways to check for worn CV axles.
CV joints: A CV joint is located at each end of the axle shaft. In front-wheel drive vehicles, there are 2 CV joints, 1 on each axle. The outer CV joint connects the axle shaft to the wheel and experiences more movement. In fact, the CV joints are only as good as the boot. The most common symptoms of a failed CV joint include clicking and popping noises while turning or when accelerating.
CV joint: Oftentimes, CV joints wear out half of the axle shaft. While repairing a CV joint is a viable repair, it is more expensive than replacing the axle. In most cases, you should replace the CV joint. Replacement will save you time and money. ACV joints are a vital part of your vehicle’s drivetrain. Even if they are worn, they should be checked if they are loose.
Unresponsive acceleration: The vehicle may be jerky, shuddering, or slipping. This could be caused by a bent axle. The problem may be a loose U-joint or center bearing, and you should have your vehicle inspected immediately by a qualified mechanic. If you notice jerkiness, have a mechanic check the CV joints and other components of the vehicle. If these components are not working properly, the vehicle may be dangerous.


There are several points of concern regarding the maintenance of axle shafts. It is imperative to check the axle for any damage and to lubricate it. If it is clean, it may be lubricated and is working properly. If not, it will require replacement. The CV boots need to be replaced. A broken axle shaft can result in catastrophic damage to the transmission or even cause an accident. Fortunately, there are several simple ways to maintain the axle shaft.
In addition to oil changes, it is important to check the differential lube level. Some differentials need cleaning or repacking every so often. CZPT Moreno Valley, CA technicians know how to inspect and maintain axles, and they can help you determine if a problem is affecting your vehicle’s performance. Some common signs of axle problems include excessive vibrations, clunking, and a high-pitched howling noise.
If you’ve noticed any of these warning signs, contact your vehicle’s manufacturer. Most manufacturers offer service for their axles. If it’s too rusted or damaged, they’ll replace it for you for free. If you’re in doubt, you can take it to a service center for a repair. They’ll be happy to assist you in any aspect of your vehicle’s maintenance. It’s never too early to begin.
CZPT Moreno Valley, CA technicians are well-versed in the repair of axles and differentials. The CV joint, which connects the car’s transmission to the rear wheels, is responsible for transferring the power from the engine to the wheels. Aside from the CV joint, there are also protective boots on both ends of the axle shaft. The protective boots can tear with age or use. When they tear, they allow grease and debris to escape and get into the joint.
While the CV joint is the most obvious place to replace it, this isn’t a time to ignore this important component. Taking care of the CV joint will protect your car from costly breakdowns at the track. While servicing half shafts can help prevent costly replacement of CV joints, it’s best to do it once a season or halfway through the season. ACV joints are essential for your car’s safety and function.

China manufacturer Demaisi 150*176*15.5/16 Rwdr-Kassette Oil Seal 12018750b for CZPT CZPT Spare Parts   with Good qualityChina manufacturer Demaisi 150*176*15.5/16 Rwdr-Kassette Oil Seal 12018750b for CZPT CZPT Spare Parts   with Good quality