Comparison of oil resistance between NBR andFKM
NBR (nitrile rubber) is a commonly used oil-resistant sealing material and is widely used in the following application conditions
Mechanical equipment seals
NBR can be widely used in oil seals, gaskets and other sealing parts of various mechanical equipment.
This includes conventional mechanical devices such as pumps, motors, gearboxes, bearings, etc.
Its good oil resistance can meet the sealing requirements of these equipment in lubricating oil environments.
1.Automotive parts seals
NBR is one of the most common sealing materials in the automotive industry.
Oil seals, gaskets and other seals used in engine, gearbox, suspension system and other parts.
Able to withstand the chemical environment of automotive oils such as gasoline, engine oil, brake fluid, etc.
2.Hydraulic system seals
NBR seals are widely used in various hydraulic devices, such as hydraulic cylinders, hydraulic valves, etc.
In the hydraulic oil environment, NBR can provide reliable sealing performance.
At the same time, it also has a certain wear resistance, which meets the use requirements of hydraulic systems.
3.Industrial equipment seals
NBR seals are also widely used in some industrial equipment such as compressors, industrial pumps, etc.
These devices will come into contact with various industrial oils during operation, and NBR seals can provide a stable sealing effect.
Compared with high-performance rubbers such as FKM, NBR has more advantages in terms of cost performance.
4.General pipeline seals
NBR pipeline seals, such as pipe joint seals, flange gaskets, etc., are widely used.
It can be used for oil and chemical sealing in various pipeline systems.
Its low price and easy processing make it a dominant player in the field of general pipeline seals.
FKM (fluororubber), as an excellent oil-resistant sealing material, is widely used in the following harsh application conditions
Aerospace equipment seals
FKM seals are widely used in the aerospace field due to their excellent high temperature and chemical resistance.
For example, components such as turbochargers and fuel systems require FKM seals to withstand harsh high temperature and high pressure environments.
Its excellent sealing performance ensures the reliable operation of these key equipment.
1.Automobile engine system seals
FKM seals are widely used in high temperature and high pressure areas such as automobile engines and gearboxes.
It can provide reliable sealing in harsh environments such as high temperature oil and fuel.
Compared with NBR seals, FKM has obvious advantages in aging resistance and service life.
2.High temperature seals for industrial equipment
FKM seals play an important role in high temperature applications of some industrial equipment.
For example, chemical equipment, injection molding machines, ovens, etc., FKM can withstand high temperature environments above 300°C.
Its excellent heat resistance ensures that the equipment can operate reliably under harsh conditions.
3.Seals in the petrochemical industry
In the fields of fine chemicals such as petroleum and chemicals, FKM seals are the preferred material.
Its excellent chemical resistance can withstand various corrosive media such as acids, alkalis, solvents, etc.
Widely used in the sealing of equipment such as pipeline valves, reactors, and storage tanks.
4.Military and military product seals
FKM seals are widely used in the field of military equipment due to their excellent comprehensive performance.
For example, missile launchers, military vehicles, etc., FKM seals can provide reliable sealing in harsh environments.
Its heat resistance, radiation resistance, and chemical corrosion resistance ensure the safety performance of military products.
Oil resistance
FKM has better oil resistance than NBR and can be used in a wider range of oil environments.
FKM can withstand high-temperature oils up to 300°C, while NBR can generally only withstand hot oils around 120°C.
