- Maintaining spark plugs is an essential aspect of routine auto care. Over time, deposits can build up around the electrodes, inhibiting their ability to generate a strong spark. Regular checks and replacements when necessary help maintain optimal engine performance and reduce the risk of unplanned breakdowns.
A: with minor lip
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:
Materials used
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:
use of sealants
Many seals come with a garter spring, found within the backside of the seal. It provides contracting pressure against the sealing surface. Making sure the spring seats correctly within the seal is an excellent first step.
(the volume of oil, etc., pushed back at the lip contact area per unit of time)

If oil is dripping down your motorcycle’s tube, your vehicle’s performance will be affected. It won’t have as much power, and you’ll notice it acting sluggishly.
The temperature range of nitrile is −35° to 120 °C (−30° to 250 °F). Due to this wide range, NBR seals can be used for gas oil, silicone oil, animal/vegetable oils and fat, hydraulic liquid as well as hot and cold water. In addition, NBR is oil resistant and has an excellent abrasion resistance, so for any application that demands shock absorbers, NBR is a perfect choice to go with.
1 .Material: There are 7 types of material used for oil seals, they are.
The ignition spark plug is essentially a small device that is screwed into the cylinder head of the engine. It consists of a central electrode, an insulator, and a ground electrode. When the engine's piston compresses the air-fuel mixture in the cylinder, the spark plug creates a spark that ignites the mixture, causing combustion to occur.


Broad chemical resistance, except against liquid alkaline metals and fluorine gas under pressure. Good sliding qualities, low wear and tear. Temperature range from -200 °C to +260°C. PTFE has hardness of approximately 95 °Shore and installing these O-rings in split grooves is recommended or alternatively the use slit or sheathed types due to the low elasticity.