When selecting a 40mm rubber gasket for a specific application, it is important to consider factors such as the operating temperature, pressure, and chemical compatibility to ensure optimal performance and longevity. Additionally, the gasket should be installed properly following manufacturer recommendations to ensure a leak-proof seal.
- The 2.0 TSI valve cover gasket is designed with precision, often made from materials like rubber or silicone, to ensure a perfect fit and sealing. It is crucial that this gasket remains intact, as any breach could lead to oil seeping into areas where it doesn't belong. Oil leaks can cause damage to spark plugs, contaminate the air intake system, or even result in loss of lubrication, all of which can severely impair engine performance and potentially lead to costly repairs.
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What are Oil Seals and how should they be ordered?
MVQ


A final step in preparation for assembly is to lubricate the shaft, sealing lip and bore with sufficient oil. This will allow the oil seal to slide more easily over the shaft and prevent dry running after the first rotation. Always use oil or grease that is compatible with the oil seal material. In addition, when sliding over the shaft, the oil seal comes into contact with the keyway, threads and grooves. By taping or covering the shaft at the location of these irregularities with oil-soaked paper, the oil seal can be mounted without damage to the sealing lip.
<Seal selection example>
Based on the above flowcharts, the oil seal type that meets the requirements shown in Table 3 would be the type code MHSA or HMSA shown in Table 4.
Stuff clean rags into the cylinder bores and all water and oil passages and bolt holes to catch scrapings and dirt.
A shaft’s surface finishing will determine how effective the sealing will be. The spiral lead and the direction of the finish tool marks have an impact on the sealing effectiveness. Therefore, it’s imperative to ensure that the shaft surface finishing is maintained.
If you follow the above instructions, the oil seals should work properly. Also watch the video below for an example of the installation process.
Put the jack and wooden spacer under the sump and raise the engine just enough to free the supports.

NBR is recommended for the majority of standard applications and is the most commonly used rubber (elastomer) material. This is because of Nitrile's compatibility with most environments as well as its relatively low cost. Generally nitrile is used for disposable non-latex gloves, footwear, automotive transmission belts, synthetic leather, hoses, o-rings, gaskets, oil seals, and more.
FKM or FPM, which is in well-known brand Viton™, can withstand higher liquid temperatures of up to 180 ˚C. FKM is highly resistant to strong acids and bases, as well as to synthetic oils and greases. Glycol-based oil and grease, however, can also damage FKM.