FGD technologies have been widely adopted in many countries as a means of meeting stringent environmental regulations and reducing the impact of air pollution on public health and the environment. In the United States, the Clean Air Act Amendments of 1990 mandated the installation of FGD systems on coal-fired power plants to reduce emissions of sulfur dioxide and other pollutants
NBR & FKM The quality of the rubber or rubber fabric used to make an outer case is the same as the quality of the rubber sealing lip. Fabric reinforced rubber is, as the name suggests, rubber reinforced with a fabric.
Soft materials (brass and so on) are not suitable.
2. Oil seal structure and functions

The Ultimate Guide to Oil Seals

car oil gasket. If you notice a sudden drop in oil pressure, it is important to have the gasket inspected immediately.
Silicone (VMQ) Oil Seals
The black color of these spark plugs is a result of carbon buildup, which is a common issue that can occur over time due to normal engine wear and tear. This carbon buildup can negatively impact the performance of the spark plug, leading to misfires, rough idling, and poor fuel efficiency. It is important to regularly inspect and replace black spark plugs to ensure optimal engine performance.
Nitrile is suitable for environments that have a temperature range of -30 degrees Fahrenheit to 250 degrees Fahrenheit. It is compatible with a variety of fluids, such as hot & cold water, silicone oil, animal & vegetable fat, hydraulic fluid, and gas oil. Nitrile is also a perfect material to use for any application that needs shock absorbers as it’s resistant to grease and abrasion.
PTFE is special in that a pre-tensioned spring is not required. This is because the material returns to its original shape when heated, also known as the shape-memory polymers (SMPs) effect. These oil seals are also supplied as integrated parts, where it only needs to be installed as one component.