EPDM is a synthetic rubber. It has general rubber properties, whether proofness, cold resistance, heat resistance, good stretching ability, so widely used for automobile, construction, engineering work, electric discharge, sound insulation, water proofness and heat insulation material.
Neoprene is suitable for flexible (expansion and constraction) and fire retardant product. It is used for cushioning, sealing, industries, electronic parts shoes, machinery (packing material) and other special material.
NBR is a synthetic rubber. It has general rubber properties, oil proofness, heat resistance, absorption resistance. Also it is low in contractibility and weight, so widely used for cloth sewing, industrial material, adiabatic and sound insulating material and as substitute of CR, and suitable for material of safety jacket
NR is used as material for cushioning and sealing and pad due to good elongation, process ability and elasticity.
EVA is ethyl vinyl acetate resin and has better water proofness and sealing ability than that of poly urethane foam. And it is widely used for machinery & automobile packing material, air conditioner, civil work, heat insulating material of verities machines, fishing parts, tools for baby and packing.
Main material of CSM is chlorosulfonated polyethylene. It is little bit expensive but suitable for bright color product. Also it is used as specific material with merit of Neoprene EPDM.
| Classification | Property | Density kg/m³ |
Tensile Strength kg/cm² |
Elongation % |
Tear Strength kg/cm² |
Hardness kg/314 cm³ |
|---|---|---|---|---|---|---|
| NR | 0.12 | - | 200 | 6.2 | 20 | |
| CR | 0.16 | 10.8 | 350 | 2.8 | 10 | |
| NBR | 0.09 | 8.2 | 180 | 3.2 | 35 | |
| 0.12 | 13.4 | 200 | 4.6 | 50 | ||
| - | 18.0 | 220 | 6.0 | 43 | ||
| EPDM | 0.10 | 6.7 | 270 | 3.5 | 20 | |
| 0.095 | 6.0 | 250 | - | - | ||
| 0.19 | - | - | - | - |
| ITEM | Property | Use |
|---|---|---|
| EPDM | Good heat and cold resistance, weather proofness. ozone resistance, water tightness | Gasket sealing material and heat resistance material of wire cover, car and electric appliance |
| EVA | Anti-shocking ability, process ability | Anti-shocking material for packing. Shock absorption cushion of air conditioner, refrigerators |
| CPE | Abrasion resistance, rust resistance weather proofness | Rubber water proof cloth, acid proff packing material, Tank lining |
| Other processing article | NR, NBR, SBR, CR, IIR, TEFLON |