MATERIAL SPECIALITY ITEM  Nitrile(NBR) Neoprene (CR) Polyurethane (PU) EPDM VITON SILICONE(VMQ) The nature of resisting ozone X ⊙○ ⊙ ⊙ ⊙ ⊙ The nature of resisting chemistry △ ⊙ ⊙ ⊙ ⊙ ⊙ The nature of resisting oil ⊙ ○△ ⊙ ⊙ ⊙ ⊙○ The nature of densify water ○ ○ ⊙ ○ ○ X The nature of resisting milling ○ ○ ⊙ ⊙○ ○ X The nature of resisting distortion ⊙○ △ X ⊙○ ○ ⊙○ The nature of resisting mechanical ⊙○ △ ⊙ ⊙○ ⊙○ X The nature of resisting acidity △ ○△ ⊙ ○ ⊙ ○△ Tensile force intension ⊙○ ○ △ ⊙○ ⊙○ X The speciality of electric apparatus △ △ ⊙ ○ △ ○  The nature of resisting water and steam ○△ △ ○ ⊙ ○△ ○△ The nature of resisting burning X ○ ⊙ X ⊙ △ The deposited time(year) 5-10Y 5-10Y ABT 20Y 5-10Y ABT 20Y ABT 20Y 　 ⊙ Excellent ○ Good △ Common X Worst

Material Shore Hardness Applications Temperature Nitrile 90 80 70 60 Mineral-based hydraulic oils and greases,Transformer and machine Oils,Engine oils S.A.E 10 to 40 and multigrade Tractor Universal Oil Pneumatic applications -40℃ to +135℃ 70 Water and Sea-water Water-soluble oil emulsions Anti-freeze(water/ethylene-glycol) -30℃ to +100℃ High Nitrile 75 Gear oils S.A.E 70 to 120 and E.P Lubricants Ester-baed lubricants Paraffin and Petrol -30℃ to +135℃ 75 Towns and natural gases Upto +80℃ Neoprene 70 Resistant to weathering,oxidation and ozone -30℃ to +80℃ Polyurethane 70 High abrasion resistance -30℃ to +90℃ EPDM 70 Exhibits good weathering and ozone resistance Resistance to castor based and certain F.R fluids Excellent resistance to Hot water and steam -50℃ to +120℃ Viton 75 Good resistance to various chemicals,mineral oils and fuels -25℃ to +250℃ 75 Towns and natural gases Upto +80℃ Silicone 70 Extreme temperature compound,limited oil and fuel resistance Good resistance to hot air and satisfactory for use in hot water -60℃ to +200℃

Copyright © 2008-2009 Ningbo EMP Rubber Products Factory All Rights Reserved.