- In conclusion, nitrile oil seals play an essential role in numerous industrial processes by providing reliable sealing solutions in oil-rich environments. Their durability, resilience, and adaptability make them a go-to choice for engineers and technicians. However, careful consideration of the specific application requirements and understanding the limitations of nitrile rubber are crucial to ensure optimal performance and longevity. With ongoing advancements in material science, nitrile oil seals continue to evolve, promising even greater efficiency and reliability in future applications.
Oil seals for cars
Modern engine oils, such as the current SG classification for gasoline engines, contain a large fraction of additives, many of which are detrimental to fluoroelastomers. The primary functions of oil-additive packages are to protect metal parts, avoid deposits in the engine, minimize oil degradation, and adjust fluid viscosity. Little attention has been paid to avoiding damage to rubber seals. Instead, elastomer producers have been expected to provide new, higher-performing products at no increased cost to auto manufacturers. Among the additives with moieties that may attack fluoroelastomers at high temperature are detergents (phenolates), dispersants (succinimides, alkylphenol amines), and antioxidants (amines, sulfides, hindered phenols).4 Many of these components are multifunctional, containing phenol or amine groups that can dehydrofluorinate and crosslink VDF-containing fluoroelastomers, leading to loss of elongation and eventual embrittlement. However, the rate and extent of reactions with seals are affected by many factors, including whether air is present in the system. When oil is exposed to air at high temperature, additives may undergo considerable changes. For example, a significant fraction of amines may be oxidized to amides, which have little effect on fluoroelastomers.5
Sealing edge This refers to the component of the oil seal that makes contact with the shaft.
It is wedge-shaped to be pressed against the shaft surface and makes contact with the shaft to ensure sufficient sealing performance and suitability for operation at high peripheral speed.

If the drive gear has slanting teeth, they may cause the rotor arm to turn. If it does, mark its new position to aid refitting
First disconnect the battery earth terminal , to avoid the risk of a short circuit while the fuel pipes are disconnected.
JIS B 2402-1 2) MHS Type 1 HMS Type 2 HMSH Type 3 MH - HM - MHSA Type 4 HMSA Type 5 HMSAH Type 6 MHA - HMA -
Like any element of the engine, oil seals are subject to wear. Over time they can lead to possible leaks of lubricating liquid.
Also known as a Rotary Shaft Seal, Shaft Seal, Lip Seal, Elastomeric Lip Seal or any variation of these. It is a simple device for excluding dust, dirt, water or any other contaminant whilst retaining lubricant in rotary shaft equipment. Generally, it has been developed as a means of protecting the bearings of rotating shafts.

7. Selecting high-quality oil seals

