- Spark plugs, an essential element in internal combustion engines, play a pivotal role in igniting the air-fuel mixture, thereby ensuring smooth engine operation. Among the various types available, the CR6HSAA spark plug stands out due to its unique features and benefits. This article delves into the intricacies of this particular spark plug, highlighting its significance and performance characteristics.
If necessary, lever it gently with a broad screwdriver blade, but take care not to bend the flange or damage the head.


Polyacrylate oil seals are a perfect compromise between quality and cost. They perform well with high temperatures and chemicals, but not as well as Viton oil seals. Polyacrylate has a temperature range of -25 degrees Fahrenheit to 300 degrees Fahrenheit. Due to their outstanding resistance to hot oil and oxidation, they are commonly used in automobile transmissions and hoses; however, they are also used for shaft seals, gaskets, and o-rings.
Oil Seals – Everything You Need To Know About
Most standard oil seals have to comply with the DIN 3760 and ISO 6194 standards. Different standard types of oil seals are available that comply with these requirements.
Polyacrylate (ACM) Oil Seals
Figure 6: Recommended housing bore chamfers (shouldered bore)
In engine applications, square rubber gaskets are used to seal various components such as valve covers, oil pans, and intake manifolds. These gaskets help prevent oil and fuel leaks, ensuring the engine operates smoothly and efficiently.
square rubber gasket

Also known as a Rotary Shaft Seal, Shaft Seal, Lip Seal, Elastomeric Lip Seal or any variation of these. It is a simple device for excluding dust, dirt, water or any other contaminant whilst retaining lubricant in rotary shaft equipment. Generally, it has been developed as a means of protecting the bearings of rotating shafts.