Elastomer Properties and Applications

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A summary of the various elastomers available for Tideflex valves.

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1. Page 1 of 2 Elastomer Properties and Applications Tideflex Technologies 600 N Bell Ave. Carnegie, PA 151 06 412-279-0044 Fax: 412-279-5410 Email:info@tideflex.com PURE GUM RUBBER (PGR) Excellent resiliency, tensile stre ngth, and abrasion resistance. Generally good for most weak chemicals, wet or dry organic acids, sodium hydroxide (caustic), alcohols and ketones. Affected By: Ozone, strong acids, fats, oils, grease s, wet chlorine gas, methane and most hydrocarbons. Operating Temperature Range: -50° F to +180° F NEOPRENE Generally resistant to moderate chemicals, ozone, fats, sodium hydroxide (caustic), methane and most hydrocarbons. Affected By: Strong oxidizing acids, acetic acid, ke tones, wet chlorine gas, chlorinated and nitro-hydrocarbons, and aromatic hydrocarbons. Operating Temperature Range: -50° F to +230° F WHITE FOOD GRADE NEOPRENE Generally resistant to moderate chemicals, ozone, fats, sodium hydroxide (caustic), methane and most hydrocarbons. Affected By: Strong oxidizing acids, acetic acid, ke tones, wet chlorine gas, chlorinated and nitro-hydrocarbons, and aromatic hydrocarbons. Operating Temperature Range: -50° F to +230° F EPDM (NORDEL) Excellent abrasion and chemical resistance at elevated temperatures. Good with dilute acids (sulfuric & acetic), steam, ketones, sodium hydroxide (caustic), hydrogen sulfide and domestic wastewater. Good UV resistance. Al so used with radioa ctive wastewaters. Affected By: Petroleum oils, hydrochloric acid, concentrated methane, wet chlorine gas. Operating Temperature Range: -50° F to +300° F WHITE FOOD GRADE EPDM (NORDEL) Excellent abrasion and chemical resistance at elevated temperatures. Good with dilute acids, (sulfuric & acetic), steam, ketones, sodium hydroxide (caustic), hydrogen sulfide and domestic wastewater. Good UV resistance. Al so used with radioa ctive wastewaters. Affected By: Petroleum oils, hydrochloric acid, concentrated methane, wet chlorine gas. Operating Temperature Range: -50° F to +300° F

2. Page 2 of 2 Elastomer Properties and Applications Tideflex Technologies 600 N Bell Ave. Carnegie, PA 151 06 412-279-0044 Fax: 412-279-5410 Email:info@tideflex.com BUNA-N Resistant to many hydrocarbo ns, fats, oils, grease, kerosene, and moderate chemicals. Excellent with methane. Affected By: Ozone, strong acids, hydrogen sulfide and ketones. Operating Temperature Range: -30° F to +230° F WHITE FOOD GRADE BUNA-N Resistant to many hydrocarbo ns, fats, oils, grease, kerosene, and moderate chemicals. Excellent with methane. Affected By: Ozone, strong acids, hydrogen sulfide and ketones. Operating Temperature Range: -30° F to +230° F HYPALON Resistant to heat, ozone, weathering, sodium hy droxide (caustic), and oxidizing chemicals. Good resistance to strong acids at room te mperature and methane. Resistant to some hydrocarbons, alcohols Affected By: Aromatic ketones, acetyl compounds, benzene compounds, petroleum oils, wet chlorine gas. Operating Temperature Range: -50° F to +300° F VITON Resistant to many halogenated hydrocarbons, fats, oils, grease, sodium hydroxide (caustic), solvents and most chemicals. Ex cellent resistance to ozone, ox ygen, methane, and weathering. Affected By: Ketones, esters, hydrogen sulfide, and anhydrous ammonia. Operating Temperature Range: -10° F to +400° F WHITE FOOD GRADE VITON Resistant to many halogenated hydrocarbons, fats, oils, grease, sodium hydroxide (caustic), solvents and most chemicals. Ex cellent resistance to ozone, ox ygen, methane, and weathering. Affected By: Ketones, esters, hydrogen sulfide, and anhydrous ammonia. Operating Temperature Range: -10° F to +400° F

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