Leather is probably the oldest of the lip materials still in common use, but the move towards mass production methods has seen a massive increase in the development of synthetic rubbers which lend themselves to accurate and repeatable injection and compression moulding. Nitrile (NBR) is still by far the most common elastomer for “normal” use, whilst Viton® (FKM/FPM) is rapidly replacing Polyacrylate (ACM) and Silicone (VMQ) for high-temperature applications. Viton® also has high resistance to abrasion and chemical attack making it a preferred elastomer. Recent developments in the use of PTFE for Rotary shaft seals has caused widespread interest particularly for high-speed shaft rotation or poor lubrication applications.
- Due to inboard springs that get adjusted as the seal faces wear, it is not required to do daily maintenance.
- The BR7EF spark plug, manufactured by leading automotive component producers, is designed with precision and durability in mind. The 'BR' in its name denotes its 'Resistor' type, indicating that it has a built-in resistor that reduces radio frequency interference, ensuring smooth operation and preventing electrical system malfunctions. The '7' signifies its heat range, which is ideally suited for a wide variety of engines, providing optimal heat dissipation for efficient combustion. Lastly, the 'EF' denotes its electrode configuration, featuring a fine wire center electrode, promoting better ignition and improved fuel economy.
Content - In conclusion, double iridium spark plugs embody the fusion of advanced technology and durable materials. They have transformed the way engines operate, offering improved performance, increased fuel efficiency, and longer service life. As the automotive industry continues to evolve, the significance of these innovative spark plugs will only continue to grow, setting new standards in engine performance and reliability.
The functionality of oil seals in between machines cannot be emphasized. Apart from their primary function of preventing the entry and escape of elements that can damage the machines, they also help to elongate the machines’ lifespan.
3. TEMPERATURE: Similar to the pressure level, you need to know what temperature your machinery can operate at. You need to choose a seal that can withstand the heat or cold. PTFE have the widest rang of temperature, making them a safe option when you are uncertain of the range.
The mating surfaces of the head or block must be perfectly clean, flat and smooth.
Oil leak: the most frequent failure of the oil seal


Shaft Hardness
Acrylate-natural rubber is its excellent heat and hot oil resistance. ACM is resistant to motor oils with modern additives, gearbox oil, lubricants etc. In addition there is the high oxidation and ozone resistance of a saturated polymer chain. Temperature range from -20 °C to +175°C.
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

In addition to withstanding high pressures, oil seals must also be able to withstand the harsh conditions often found in industrial settings. This includes exposure to oil, chemicals, heat, and vibration, which can all contribute to the degradation of the seal over time. Proper selection of materials and regular maintenance are essential for ensuring the longevity and reliability of high-pressure oil seals.