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2426
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1733
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1731
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2980
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2108
- The A7TJC spark plug is specifically designed to cater to the stringent demands of high-performance engines. Its construction, with a 7mm thread length and a heat range classified as 'T', denotes its suitability for engines that require a slightly hotter spark for optimal combustion. The 'J' in the model name refers to the gap configuration, indicating a conventional gap setting that ensures consistent ignition.
Viton Oil Seals
Its sealing edge comes in full contact with the shaft surface in order to provide excellent sealing performance.
(See Figure 3.)

Oil seals applications
A: with minor lip
a) The shaft on which the oil seal is to be mounted should be ground with the surface finish or surface roughness between 0.2 to 0.8 Microns. It is best for the shaft to be hardened atleast to 40 – 45 HRc in order to prevent groove formation on the shaft due to the pressure exerted by the spring.
ERIKS
How does my engine benefit from high mileage oil?
Oil Seal Manufacturing: Processes and Considerations
Functions
Fundamental things and its importance
High mileage oil is specifically designed for cars with more than 75,000 miles. This type of oil can help reduce oil consumption, minimize leaks and oil seepage, and can also help reduce smoke and emissions in older engines.