◎ Excellent | ○ Good | △ Fair | × Poor | |||||||||
Common
name (ASTM) |
NATURAL RUBBER (NR) | ISOPRENE RUBBER (IR) | STYRENE BUTADIENE RUBBER (SBR) | BUTADIENE RUBBER (BR) | POLYCHLOROPRENE (Neoprene) (CR) |
BUTYL RUBBER (IIR) | NITRILE RUBBER (NBR) | ETHYLENE PROPYLENE RUBBER (EPM,EPDM) | CHLOROSULPHONATED POLYETHYLENE (Hypalon) (CSM) | ACRYLIC RUBBER (ACM,AEM) | SILICONE RUBBER (VMQ) | FLUORO-ELASTOMERS (Viton) (FKM) (FPM) |
Chemical name | cis-polyisoprene | Synthetic cis-polyisoprene | Polybutadiene | Isobutylene-isoprene copolymer | acrylonitrile-butadiene copolymer | Ethylene propylene copolymer, or a terpolymer with a diene | Alkyl acrylate copolymer | Polysiloxane | ||||
Specific Gravity | 0.92 | 0.92~0.93 | 0.93~0.94 | 0.91~0.94 | 1.15~1.25 | 0.91~0.93 | 1.00~1.20 | 0.86~0.87 | 1.11~1.18 | 1.09~1.10 | 0.95~0.98 | 1.80~1.82 |
Mooney Viscosity ML1+(100℃) | 90~150 | 55~90 | 30~60 | 35~55 | 45~120 | 45~75 | 30~100 | 50~150 | 30~55 | 45~60 | liquid | 65~180 |
Physical Properties | NR | IR | SBR | BR | CR | IIR | NBR | EPM,EPDM | CSM | ACM | SI | FKM |
Hardness (Shore A) | 10~100 | 20~200 | 30~100 | 30~100 | 10~90 | 20~90 | 15~100 | 30~90 | 50~90 | 40~90 | 30~90 | 50~90 |
Tensile Strength (Kg/cm2) | 30~300 | 150~200 | 50~200 | 20~200 | 50~250 | 50~150 | 50~250 | 50~200 | 70~200 | 70~120 | 40~100 | 70~200 |
Elongation(%) | 1000~100 | 1000~100 | 8800~100 | 8008~100 | 1000~100 | 800~100 | 800~100 | 800~100 | 500~100 | 600~100 | 500~50 | 500~100 |
Resiliency | ◎ | ◎ | ○ | ◎ | ◎ | △ | ○ | ○ | ○ | △ | ◎ | △ |
Tear Resistance | ◎ | ○ | △ | ○ | ○ | ○ | ○ | △ | ○ | △ | ×~△ | ○ |
Abrasion Resistance | ◎ | ◎ | ◎ | ◎ | ○~◎ | ○ | ◎ | ○ | ◎ | ○ | ×~△ | ◎ |
Cracking Resistance | ◎ | ◎ | ○ | △ | ○ | ◎ | ○ | ○ | ○ | ○ | ×~○ | ○ |
Maximum Service Temperature (℃) | 120 | 120 | 120 | 120 | 130 | 150 | 130 | 150 | 150 | 180 | 280 | 300 |
Minimum Service Temperature (℃) | -50~-70 | -50~-70 | -30~-60 | -73 | -35~-55 | -30~-55 | -10~-20 | -40~-60 | -20~-60 | 0~-30 | -70~-120 | -10~-50 |
Aging Resistance | ○ | ○ | ○ | ○ | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ |
Light Resistance | ○ | ○ | ○ | ○ | ○ | ◎ | ○ | ◎ | ◎ | ◎ | ◎ | ◎ |
Ozone Resistance | × | × | × | × | ◎ | ◎ | × | ◎ | ◎ | ◎ | ◎ | ◎ |
Flame Resistance | × | × | × | × | ○ | × | △ | × | ×~△ | ×~○ | ◎ | |
Insulation (Ωcm) | 15 10 | 10 15 | 10 15 | 14 15 | 10 15 | 16 18 | 2 18 | 10 15 | 14 | 2 8 | 11 15 | 15 18 |
10 ~ 10 | 10 ~ 10 | 10 ~ 10 | 10 ~ 10 | 10 ~ 10 | 10 ~ 10 | 10 ~ 10 | 10 ~ 10 | 10 | 10 ~ 10 | 10 ~ 10 | 10 ~ 10 | |
Air Impermeability | ○ | ○ | △ | ○ | ○ | ◎ | ○ | ○ | ◎ | ○ | △ | ◎ |
Radiation Resistance | △~○ | △~○ | ○ | × | △~○ | × | △~○ | × | △~○ | ×~○ | △~◎ | △~○ |
Solvent Resistance | NR | IR | SBR | BR | CR | IIR | NBR | EPM,EPDM | CSM | ACM | VMQ | FKM |
Gasoline, Naphtha | × | × | × | × | ○ | × | ◎ | × | ○ | ◎ | ×~△ | ◎ |
Benzene, Toluene | × | × | × | × | × | △~○ | ×~○ | △ | ×~△ | × | ×~△ | ◎ |
Aliphatic Hydrocarbons | ◎ | × | × | × | × | × | × | × | ×~△ | × | ×~○ | ○ |
Alcohol | × | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | × | ◎ | ◎ |
Ester | △~○ | × | × | × | ×~△ | △~○ | ×~△ | ○ | × | × | ×~△ | ×~△ |
Ketones | ×~△ | △~○ | △~○ | △~○ | △~○ | ◎ | × | ◎ | △~○ | × | ○ | × |
Ethyl Acetate | ◎ | ×~△ | ×~△ | ×~○ | × | ◎ | ×~△ | ◎ | × | × | △ | × |
Acid / Alkali Resistance | NR | IR | SBR | BR | CR | IIR | NBR | EPM,EPDM | CSM | ACM | VMQ | FKM |
Water | × | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | △ | ○ | ◎ |
Organic Acid | × | × | × | × | ×~△ | △~○ | ×~△ | × | △ | × | ○ | × |
High Consistency Inorganic Acid | ○ | × | × | × | ○ | ◎ | △ | ○ | ◎ | △ | △ | ◎ |
Low Consistency Organic Acid | ○ | ○ | ○ | ○ | ◎ | ◎ | ○ | ◎ | ◎ | ○ | ○ | ◎ |
High Consistency Alkali | ○ | ○ | ○ | ○ | ◎ | ◎ | ○ | ◎ | ◎ | △ | ◎ | × |
Low Consistency Alkali | ○ | ○ | ○ | ◎ | ◎ | ○ | ◎ | ◎ | ○ | ◎ | △ |