- An oil seal, fundamentally, is a device designed to prevent the leakage of lubricants while preventing the ingress of contaminants into the machinery. The dimensions '40x52x7' denote the size of this specific oil seal, specifying its inner diameter (40mm), outer diameter (52mm), and thickness (7mm). These measurements are crucial for proper fitment and sealing efficiency in a targeted application.
Acrylonitrile-buta-diene natural rubber (NBR - Nitrile)

3, the oil seal installation position is small, axial small size, easy processing, and make the machine compact.

oil seal 45 62 8.
Some distributors can be removed without separating the gears, and so the arm does not turn.
Unthinkable in the list of seals are oil seals, which provide a seal against splashing oil. The most important oil seals are used for rotating shafts and valve stem seals. Oil seals are intentionally never completely sealed to lubricate the seals and prevent wear.
There are a variety of oil seals used in a variety of applications to help close the space between a stationary and a moving part. By closing the space it prevents any lubricants from escaping. Additionally, oil seals help create a seal that prevents any contaminants from entering machinery which can cause a host of problems. Mechanical equipment and machinery require different size or type oil seals to ensure that there is a superior and precise seal. Because oil seals help reduce contamination or mixing of materials it prolongs the life of machinery and helps ensure a more reliable performance.
Nitrile (also known as Buna N)
Choosing Quality Oil Seals:


The basic principle of an oil seal is fairly straightforward. It is installed adjacent to the bearing, with the flexible lip against the rotating shaft and the casing pressed into the housing to hold the seal in place. It’s important that the sealing lip is lubricated to prevent it from overheating as a result of any generated friction. It’s also crucial to understand which type of seal is appropriate for your particular machinery. Before selecting your seal, consider the environment, temperature, pressure and shaft speed of your machine, as well as the type of medium the seal will come into contact with during operation. These considerations will all determine the size, colour, and type of lip material or sealing element to choose, and whether it can be sealed in or sealed out.
The material of the sealing lip is chosen according to the liquid to be sealed and the rotational speed. For larger shafts, an NBR sealing lip can cope with surface speeds of up to 10-12 m/s, while an FKM lip is suitable for speeds of up to 35-38 m/s.