Like any element of the engine, oil seals are subject to wear. Over time they can lead to possible leaks of lubricating liquid.
Viton Oil Seals - A synthetic rubber and fluoropolymer elastomer, Viton is used to make oil seals that provide resistance in both high temperature, up to 250°C and low compression set components. They also offer a high resistance to chemicals and abrasions, so they can be used in elements that regularly interact with petroleum and solvents.
Valve Cover Gasket Set: Comprehensive Sealing Solutions

ERIKS
Thoroughly clean the sleeve at the back of the pulley, and look for any roughness on it where it touches the seal. If necessary, smooth it with fine wet-and-dry abrasive paper.
Figure 1: Types of sealing devices

There is a British Standard laid down for the control of synthetic rubbers. BS 3574 (1989) helps to determine shelf life – for instance, Nitrile (NBR) and Polyacrylic (ACM) are Group ‘B’ rubbers and have a 7-year life, whilst Silicone (VMQ) and Fluoroelastomers (Viton®) are Group ‘C’ rubbers and have a 10-year shelf life. PTFE and Leather do not come into this category but like the others should be kept in the original packing for as long as possible away from direct light, dust, and humidity. Ozone, which can also be produced by battery-driven forklift trucks has a very bad effect on synthetic rubbers. Finally, protect the sealing lip – DO NOT hang the seals on nails, wire etc.
With the help of tips and information from our suppliers, our specialists will be happy to explain how to install oil seals. Please read the instructions carefully before installation.
In conclusion, iridium spark plugs for motor vehicles offer exceptional durability, performance, and efficiency, making them a preferred choice for modern automotive applications. Understanding the significance of iridium spark plugs and their selection for motor vehicles is crucial for optimizing engine performance, fuel economy, and environmental impact, ensuring reliable operation and longevity.


Industrial Oil Seals: Applications and Importance
H7 or H8
2. If the nominal bore diameter exceeds 400 mm:
H7