Commonly used rubber sealing rings include a variety of types, each material has its own unique characteristics and application scenarios. The following are some common rubber sealing rings and their characteristics:

Nitrile rubber (NBR) :

Characteristics: With good wear resistance, anti-permeability and oil resistance, suitable for petroleum hydraulic oil, sweet lubrication hydraulic oil, diester lubricating oil, gasoline, water, silicone grease, silicone oil and other media.

Scope of application: Widely used in various sealing occasions requiring oil resistance and wear resistance, such as automotive, machinery, chemical industry and other industries.

Fluororubber (FKM/Viton) :

Characteristics: high temperature and medium resistance is good, the high temperature can reach 230℃, and can maintain good medium resistance and compression deformation resistance under high temperature conditions. At the same time, it is not afraid of acid and alkali, oil resistance is the best oil resistant rubber. But poor processing, expensive, poor cold resistance, low elasticity and permeability.

Scope of application: Especially suitable for high temperature, strong corrosion and other harsh environment sealing, such as aerospace, chemical, petroleum and other fields.

Ethylene propylene Diene rubber (EPDM) :

Characteristics: It has good vulcanization characteristics and has the lowest proportion in all rubber. Good heat resistance, ozone resistance and weather resistance, good elasticity, low temperature performance and insulation performance.

Scope of application: Often used for sealing in brake fluid and hot water environment, such as automotive, construction, electronics and other industries.

Silicone:

Characteristics: Chemical stability, no combustion, good heat resistance, dielectric properties, low temperature elasticity, good weather resistance, good ozone resistance.

Scope of application: Generally used for sealing in medical, food and low temperature environment, such as medical equipment, food packaging, etc.

Neoprene rubber (CR) :

Features: Good physical and mechanical properties, oil resistance, heat resistance, fire resistance, sunlight resistance, ozone resistance, acid and alkali resistance and chemical reagent resistance. But the cold resistance and storage stability are poor.

Scope of application: Widely used in wire and cable, rubber hose, tape, rubber shoes and other products.

NR:

Characteristics: Excellent resilience, insulation, water insulation and plasticity.

Scope of application: Widely used in the production of rubber products such as tires, hose, tape, wire and cable.

Polyurethane rubber (PU) :

Characteristics: high friction coefficient, low temperature resistance, ozone resistance, radiation resistance, electrical insulation, good bonding performance. However, the swelling of alcohols, esters, ketones and aromatics is larger.

Scope of application: Used for sealing occasions requiring high wear resistance and high elasticity, such as hydraulic seals, pneumatic seals, etc.

Acrylic Rubber (ACM) :

Characteristics: Ozone resistance, good weather resistance, general mechanical strength, poor elasticity and low temperature resistance.

Scope of application: Mainly used for the production of heat and oil resistant rubber parts, such as various sealing rings and electrical insulation parts of automobiles.

Clip rubber:

Characteristics: wear resistance, extrusion resistance and low temperature resistance, dimensional stability, good moisture absorption, with shock absorption, dust, flame retardant role.

Scope of application: Widely used in automobile, construction industry, electronics industry, chemical industry, sports venues and other fields.

In addition, there are hydrogenated nitrile butadiene rubber (HNBR), fluorosilicone rubber (FLS) and other materials of the seal ring, each of which has unique properties and application areas. When selecting the seal ring, it is necessary to select the appropriate material and model according to the specific use environment, working pressure, temperature and other conditions.