PTFE, which is used in the well-known brand Teflon®, is less commonly used, but it is the preferred material for specific rotating seals in the chemical, food and pharmaceutical industries. This material is notable for having a very low frictional resistance and the best chemical resistance. It can also withstand a very wide range of temperatures in these types of seals; -80 ˚C to 200 ˚C. The shafts on which oil seals with PTFE lips are used require a harder and finer finish. Something like an axle sleeve can also be used to meet this requirement.
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.
ERIKS type GV (type C according to DIN) is equivalent to type M, but is a heavy-duty version with a double metal casing. This can be a useful solution with larger diameters in more demanding applications. There is also a version of this type with a dust lip; the GVST (type CS according to DIN).
In addition to preventing oil leaks, oil seals also help to keep contaminants out of the motor. Dust, dirt, and debris can cause damage to the internal components of the motor if they are allowed to enter. The oil seal acts as a barrier to keep these harmful substances out and maintain the cleanliness of the motor.This technique is used when the seal depth must match the housing surface precisely. It involves stopping the installation tool at the machined housing face. Ensure the tool is perfectly perpendicular to the shaft for best results. This technique is ideal for applications requiring exact seal positioning relative to the housing face.
The Importance of the Auto Valve Cover Gasket A Key Component in Engine FunctionalityCommon lip materials available for use in our oil seals include:
The basic principle of sealing is straightforward – the flexible lip is held against the rotating part (usually the shaft) whilst the casing (or O.D.) is pressed into the housing or bore and holds the seal in place. The sealing lip needs some form of lubrication to avoid overheating and is usually energized by means of a garter spring.
3. Industrial machinery NBR oil seals are used in pumps, compressors, hydraulic systems, and gearboxes.
There are different types of spark plugs available on the market, each designed for specific engine types and operating conditions. The most common types are copper, platinum, and iridium spark plugs. Copper spark plugs are the most affordable and provide good performance for everyday driving. Platinum spark plugs offer better longevity and performance, while iridium spark plugs are the most durable and provide the best spark performance.