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epr
EPR
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Common Name
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EPR, EPT, EPDM, NORDEL®
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ASTM D-2000 Classification
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CA
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Military (MIL STD 417)
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RS
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Chemical Definition
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Ethylene Propylene
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General Characteristics
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Durometer Range (Shore A)
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30 - 90
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Tensile Range (P.S.I.)
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500 - 2500
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Elongation (Max. %)
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600
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Compression Set
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Good
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Resilience - Rebound
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Good
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Abrasion Resistance
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Good
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Tear Resistance
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Fair
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Solvent Resistance
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Poor
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Oil Resistance
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Poor
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Low Temperature Usage (F°)
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-20° to -60°
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High Temperature Usage (F°)
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to 350°
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Aging Weather - Sunlight
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Excellent
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Adhesion to Metal
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Fair to Good
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Comment
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Ethylene Propylene is a polymer with outstanding properties. It was exceptionally good weather aging and ozone resistance; excellent water and chemical resistance; excellent resistance to gas permeability, and excellent resistance to aging due to exposure to steam, and heat resistance excellent up to 350°F. Ethylene Propylene is a polymer where oil and solvent resistance is poor, however, it is fairly good in ketones and alcohols. It is not recommended for food applications or exposure to aromatic hydrocarbons.
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