Durability is another crucial factor; rock drills endure intense forces and friction, so materials like tungsten carbide or titanium should be considered for the drill bits
- Next, remove the old spark plugs using the spark plug socket and ratchet
Several variables must be considered when selecting oil seals. The physical dimensions and materials will vary depending on the environment of use. In addition, oil seals must remain lightweight, compact, and exhibit high self-lubrication performance.
Figure 14.2. Oil retention seal (CR Industries).

Beyond the variety of lip designs, oil seals also come in various case designs, each serving a unique role. Here are some of the most common ones:


Chinese spark plug manufacturers adhere to stringent quality control measures to ensure that their products meet industry standards and specifications. Advanced manufacturing processes, precision engineering, and rigorous testing protocols are employed to produce high-quality spark plugs that deliver reliable performance and durability. Manufacturers prioritize material quality, heat resistance, and electrode design to optimize the spark plug's ignition capabilities and longevity.
Purpose of oil seal
How does an Oil Seal Work
Nitrile Butadiene Rubber (NBR, nitrile)