Comparison of the characteristics of polyurethane (ether based and ester based)
| BOSS Sealing Solutions | |||
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Properties |
ether based（Shore A 95・90） |
ester based（Shore A 90・70・50・30） |
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Tensile strength |
|
○ |
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Elongation rate |
|
○ |
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Tear strength |
|
○ |
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Rebound elasticity |
○ |
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Wear resistance |
sliding wear |
|
○ |
|
gouging abrasion |
○ |
|
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Hydrolysis resistance |
○ |
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Oil resistance |
|
○ |
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Strength |
|
○ |
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Durability |
|
○ |
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Acid and alkali resistance |
○ |
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