Sealing process
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
In addition to starting the engine, the ignition spark plug also plays a role in regulating the engine's performance. A properly functioning spark plug can improve fuel efficiency, reduce emissions, and maintain engine power. On the other hand, a faulty spark plug can lead to issues such as misfiring, rough idling, and poor acceleration.
The perfect remedy for this is to use oil seal materials that are rated for the temperature of your application. Also, ensure that the elastomer is free from volatile constituents like waxes, plasticizers, etc.
Recognizing and avoiding common installation mistakes is key to the longevity and effectiveness of oil seals. Here are some frequent errors to watch for:
Custom HINO Hyundai / KIA ISUZU MITSUBISHI FUSOSUZUKI
Lever the seal out with a screwdriver, working carefully to avoid scoring the seal housing.
Choosing the right oil seal