- In conclusion, rocker valve cover gaskets play a vital role in the functioning of a car's engine by preventing oil leaks and maintaining proper lubrication. Regular inspection and maintenance of these gaskets are essential to ensure the longevity and performance of the engine. By addressing any issues with the gaskets promptly, car owners can avoid costly repairs and keep their vehicles running smoothly for years to come.
Overview of Oil Lip Seals
There are several key factors to consider when you are selecting the oil seals for your next project to ensure that you protect your machinery from immediate and long-term damage.
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.
Car Spark Plug: Importance and Impact on Engine Performance

Put a wooden block or a piece of large tube against the seal and gently tap it squarely into the housing until it is fully home. Refit the timing cover, if removed.
Figure 4: Shaft end chamfer


ACM