Natural rubber (NR) is polymerized from isoprene as the monomer, exhibiting excellent resilience, tensile strength, abrasion resistance, and superior tear and compression set properties. This makes it an ideal choice for tires, shock-absorbing components, cushioning ropes, and sealing parts. However, it is oil-resistant and relatively weak in weather, ozone, and oxygen resistance. The typical temperature range for natural rubber usage is between -60°C and 100°C.

Styrene butadiene rubber (SBR)
Styrene butadiene rubber (SBR) is a copolymer of butadiene and styrene. Among them, Butadiene-10 containing 10% styrene exhibits good cold resistance, while Butadiene-30 containing 30% styrene has excellent wear resistance. This rubber is suitable for making tires and sealing parts, but its performance in terms of oil resistance and aging resistance needs to be improved. The temperature range for the use of styrene butadiene rubber is -60 to 120 ℃.
Chloroprene rubber (CR)
Chloroprene rubber (CR) is polymerized from chloroprene and has excellent weather resistance, ozone aging resistance, and self extinguishing properties. In addition, its tensile strength, elongation, and resilience are also quite excellent, with excellent adhesion to metals and fabrics. Therefore, it is often used to make products such as sealing rings, sealing profiles, rubber hoses, coatings, and wire insulation layers. However, it should be noted that its products are not resistant to synthetic diester lubricants and phosphate hydraulic oils. The temperature range for the use of chloroprene rubber is -35 to 130 ℃.
Nitrile rubber (NBR)
Nitrile rubber (NBR) is made by copolymerizing butadiene and acrylonitrile, and its oil resistance, heat resistance, and wear resistance will increase with the increase of acrylonitrile content, but its cold resistance will correspondingly decrease. Especially nitrile rubber containing carboxyl groups exhibits excellent wear resistance, high temperature resistance, and oil resistance. Therefore, nitrile rubber is often used to make various oil resistant sealing parts, membranes, rubber hoses, and soft oil tanks. However, it should be noted that its products are not resistant to weather, ozone aging, and phosphate hydraulic oil. The temperature range for the use of nitrile rubber is -55 to 130 ℃.
Ethylene propylene diene monomer (EPM, EPDM)
Next, we will also explore ethylene propylene rubber (EPM and EPDM), which have excellent weather resistance, ozone aging resistance, and heat resistance. It has a wide range of applications, including automotive components, wires and cables, building materials, etc. However, its disadvantage is poor oil resistance and wear resistance in certain media. Therefore, comprehensive consideration should be given to specific application scenarios when selecting and using.
Ethylene propylene rubber is made from ethylene and propylene as raw materials through binary or ternary copolymerization reactions. It exhibits excellent weather resistance, ozone aging resistance, as well as resistance to steam, phosphate hydraulic oil, acid, alkali, rocket fuel, and oxidants. In addition, its electrical insulation performance is also superior. Therefore, ethylene propylene rubber is very suitable for making sealing parts and hoses for phosphate hydraulic oil systems, as well as sealing profiles, adhesive tapes, and wire insulation layers for aircraft, automotive doors and windows. However, it should be noted that its products are not resistant to petroleum based oils. It has a wide temperature range of use, up to -60 to 150 ℃.
Chlorosulfonated polyethylene rubber (CSM)
It also performs well, resistant to weather and ozone aging, and its oil resistance increases with the increase of chlorine content. In addition, it is also resistant to acid and alkali. This type of rubber is suitable for making products such as adhesive tape and connecting sleeves for automotive air filters. Its operating temperature range is -50 to 150 ℃.
Epoxy chloropropane hydrocarbon polymer (CO)
Or a binary copolymer of epichlorohydrin and epichlorohydrin (ECO), or a ternary copolymer with a third monomer (epichlorohydrin) added. This type of material exhibits oil and ozone resistance, and has better heat resistance than ordinary rubber, while also having lower breathability. Therefore, it is often used to make products such as sealing gaskets and membranes.
Acrylic Rubber (ACM)
This is a special rubber that has emerged internationally. It has excellent heat resistance, oil resistance, cold resistance, and ozone resistance properties. By combining with other rubber materials such as fluororubber, nitrile rubber, etc., its high temperature resistance and oil resistance can be further improved. ACM rubber has a wide range of applications in high-temperature oil seal materials for automobiles, military equipment, building sealants, and other fields.
Silicone rubber
It is a rubber material based on polysiloxane. According to different formulations, silicone rubber exhibits excellent heat resistance, cold resistance, and aging resistance. At the same time, its insulation resistance and dielectric properties are also quite excellent. Although its strength and tear resistance are slightly insufficient, and it is not oil resistant and relatively expensive, silicone rubber still has a wide range of applications in sealing rings, sealing profiles, sound insulation, and shock absorption products.
High performance rubber materials such as fluororubber (FPM) and fluorosilicone rubber (MFQ)
They perform well in heat resistance, oil resistance, acid and alkali resistance, but their prices are relatively high. Therefore, when selecting and using, it is necessary to consider comprehensively based on specific application scenarios and requirements.