- Moreover, silicone oil seals exhibit excellent resistance to ozone, weathering, and aging, which significantly extends their service life. They are also resistant to a variety of chemicals, making them suitable for use in harsh chemical environments. In the medical and food industries, where hygiene is paramount, silicone oil seals are preferred due to their non-toxicity and ease of cleaning.
- Polyacrylate (PA) Oil Seal: 75 durometer (+/- 5)
As shown in Figure 1, sealing devices come in two types: contact and non-contact.
Oil seals are among the major contact type sealing devices.
, such as placing the seal in the wrong position in its housing or handling it incorrectly.
To diagnose potential problems with the ignition spark plug, there are a few signs to look out for. These include difficulty starting the engine, decreased fuel efficiency, and engine misfires. If you notice any of these symptoms, it is important to have your spark plug inspected and replaced if necessary.
Figure 4.6. Rubber reinforced with carbon black and CNT nanocomposite to reduce the accumulation of heat in tyre [42].
There may be a thick spacer gasket between two thin paper ones. Check the spacer for cracks. If it needs replacing, be sure the new one is the right thickness, because this governs the fuel-pump lever stroke .
The valve cover gasket plays a critical role in maintaining the integrity of the engine by preventing oil leaks and maintaining proper lubrication. It ensures that the engine remains free from oil leaks, contributing to its overall efficiency and reliability. A high-quality valve cover gasket is essential for preserving the proper functioning of the engine and protecting it from potential damage due to oil leakage.
Aspects to consider when selecting oil seals
The metal case and spring material used in the oil seal should be selected based on the substance to be sealed.
Table 6 shows how to select the metal case and spring materials.
4. The sealing function of the oil seal is good and the service life is long. It has the certain adaptability to the vibration of the machine and eccentricity of the main shaft.
2. Silicone – Used in specific applications where only light loads are applied.


Trailer hub oil seals play a critical role in maintaining the integrity of the wheel hub assembly on trailers and other towed vehicles. These seals are designed to prevent the leakage of lubricating oil and the ingress of contaminants, ensuring the proper functioning and longevity of the wheel bearings and other internal components. The trailer hub oil seal is typically positioned within the hub assembly, creating a barrier that helps retain the lubricant and protect the bearings from moisture, dirt, and debris.
HID (High Intensity Discharge)
Dust lip
1) Shaft design
Material Code ISO 1629