automatic zigzag sewing machine

Bag stitching machine with conveyor is an essential equipment for industries that require packaging and sealing products efficiently. This machine combines two important functions in one, making it an ideal solution for businesses looking to streamline their production process.

By preventing lubricants from escaping, they protect key components of machinery from being damaged by leaks of various fluids. Everything from car engines to assembly machines use these oil seals to remain free from any harmful interactions that can cause serious and expensive damage to any of their critical parts.

This is almost similar to that of ‘A’ type seal. But this has the metal case placed outside. When the housing is rough, temperature is high and working conditions are severe, this type is preferred

Repeat the process of installing oil seals for any other locations where they are required. Be sure to follow the same steps for each installation to ensure a leak-free performance.

In addition to withstanding high pressures, oil seals must also be able to withstand the harsh conditions often found in industrial settings. This includes exposure to oil, chemicals, heat, and vibration, which can all contribute to the degradation of the seal over time. Proper selection of materials and regular maintenance are essential for ensuring the longevity and reliability of high-pressure oil seals.

A wide range of sealing devices are used in various machines.
Sealing devices serve the following functions:

single and double lip

Before you start installing oil seals, you need to choose the right size and type of oil seal for your application. Oil seals come in a variety of sizes and materials, so it's important to choose the right one for your needs. Consider factors such as temperature, pressure, and fluid compatibility when choosing an oil seal.

Figure 5: Shaft surface with and without lead marks

Car Head Gasket: Essential Component in Engine Sealing

The metal case is the exterior (or frame) of the oil seal, the principal function of which is to give rigidity and strength to the seal. The material of the case must be selected depending on the environment where the seals are to be used. Often the metal case is covered by the same rubber material used in the sealing element, which also helps seal the exterior of the oil seal in the housing bore. Common case material types are:

Figure 3: Sealing function of main lip radial load
* KOYO is a registered trademark of JTEKT.

No single physical property of rubbers is responsible for the successful performance of an oil seal or ‘O’ ring. The ultimate tensile strength, breaking elongation, modulus, shore hardness, creep and stress relaxation in tension and compression loads are all important physical properties that characterize a seal or ‘O’ ring. Compression strength and set together with stress relaxation or decay are important for effective sealing. The difference in these properties in a swollen seal is highly critical. An optimum swelling value in a fluid medium is a desirable feature. De-swelling decreases the seal pressure against the wall of the housing where the seal is fixed, leading to leakage. Over swelling minimizes the physical properties of the rubber. Seals made of polysulfide rubbers have extreme fuel resistance but undesirably high compression set. The effect of temperature on the seal is an important factor. Swelling under stress can increase at higher temperatures and a suitable compounding technique should be adopted to reduce this effect.

Oil seals come in various shapes to fit the machines and substances to be sealed.
Figure 2 shows the structure and the names of the various components of the most typical oil seal.
The functions of the various components are also indicated in Table 1.