- In the realm of high-performance vehicles and racing applications, double iridium spark plugs have become indispensable. Their superior igniting power enables faster engine starts, quicker acceleration, and optimized power output, making them a favorite among enthusiasts and professionals alike.
- Proper maintenance of spark plugs is also vital. Regular checks and replacements, as recommended by the manufacturer, can ensure optimal engine performance. Worn or dirty spark plugs can lead to misfires, reduced fuel efficiency, and even engine damage. Symptoms of worn spark plugs include rough idling, difficulty starting the bike, and decreased acceleration.
Nitrile (also known as Buna N)
Type code
- **What are A7TC Spark Plugs?
- The application of acrylate
Figure 3: Sealing function of main lip radial load
* KOYO is a registered trademark of JTEKT.
Oil Seals 101 – The Ultimate Guide

spark plug gasket.
Developments and issues
Oil seals are used to fill gaps between stationary and revolving parts of equipment, often known as radial shaft seals or rotary seals. These seals are frequently employed to keep impurities out and prevent lubricating oils, hydraulic fluids, or other liquids from escaping out of the system. An oil seal features:
Oil leak: the most frequent failure of the oil seal
Choosing the correct type for your application
An oil seal, also known as crankshaft retainer, is a small device, but essential to ensure the proper engine operation. It plays a key role in all moving parts of an engine, acting as a physical barrier. This mechanical seal fulfils the dual purpose of sealing a rotary shaft to maintain the necessary lubrication (avoiding leaks) and preventing other foreign matter from contaminating shafts and bearings in the rotary shaft equipment.