The metal used in the outer case of oil seals is usually made of carbon steel. Upon request, and depending on quantities, a different type of steel (such as stainless steel) can be used.
Scrape off all the traces of dirt and old gasket from the engine and sump flanges with a paint scraper.


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.
Name Type
(type code) Shape Features

valve cover gasket assembly. The valve cover gasket assembly seals off the engine and prevents any unwanted contaminants from entering, thus ensuring the engine remains clean and well-maintained.
The first material that we are going to look at is Nitrile Buna- N 70 or NBR for short.
Oil seals require sufficient time to solidify and cure. Premature use of equipment with newly installed oil seals can compromise the integrity of the oil seal and may damage your machine. Refer to the supplied instructions for the time frame allocated for the seal to cure.
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.


Offering a much more superior temperature resistance, polyacrylate seals are perfect for applications such as high surface speed oil. Benefits include:
Here are some additional tips that will help you have a successful O-ring installation.

crankshaft oil seal.
Auto spark plugs are critical components in the ignition systems of internal combustion engines in vehicles. These plugs play a pivotal role in igniting the air-fuel mixture within the engine cylinders, initiating the combustion process that powers the vehicle. High-quality auto spark plugs are essential for ensuring efficient fuel combustion, optimal engine performance, and reduced emissions, directly impacting the overall efficiency and environmental impact of the vehicle.
What is Oil Seal | Purpose , Types of Oil Seal , Advantages
There are several options available when it comes to spark plugs for the MK7 GTI. Some popular choices include NGK, Bosch, and Denso. These brands offer a variety of spark plugs that are specifically designed for performance cars like the MK7 GTI. It's important to do your research and choose the spark plugs that are best suited for your driving style and performance needs.
mk7 gti spark plugs

These seals are more commonly used in pumps, motors both electric & hydraulic, gearboxes & occasionally dirt wipers in hydraulic cylinders. They help protect shafts and bearings from dirt and harmful contaminants entering the internals of the application that they are fitted to, as well as prevent any leaks of lubricant.