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MATERIAL SELECTION GUIDE
| COMMERCIAL MATERIALS | |||||
| Material | . | General Properties | . | Common Applications | . |
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(Nitrile/NBR) 70 Durometer Black |
Good resistance to petroleum hydrocarbons and fuels. Widely used with most oils, hydraulic fluids, alcohol. Many compound variations for specific applications. Basic temperature range: -40 F to +250 F* |
Petroleum oil seals Hydraulic fluid seals Water / Greases Transmission fluid seals |
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Chemigum (Goodyear) • Hycar (Zeon) • ChemicalKrynac (Polysar) • Ny Syn (Copolymer) • Paracril (Uniroyal) • Perbunan (Mobay) |
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| Viton® (Fluorocarbon) 75 Durometer |
. Color Color | Excellent high temperature and chemical resistance. Excellent mechanical and physical properties. Low compression set set and low gas permeability. Basic temperature range: -20 F to +400 F* |
. | Vacuum seals Acids / Fuels High heat Chemicals / Solvents |
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| Trade Names: Fluorel (3M) • Viton® (DuPont Dow Elastomers) |
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| Silicone 70 Durometer |
Broad temperature range. Odorless / non-toxic. Resistance to sun and ozone. Fungus resistanct. Poor tear and abrasion strength. Poor resistance to oils. Basic temperature range: -80 F to +400 F* |
Dry heat Alcohol / Oxygen Electrical / Medical Low temperature |
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| Trade Names: Silastic (Dow) • None (General Electric) • None (Stauffer-Wacker) • None (Union Carbide) |
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| EPDM/EPR (Ethylene Propylene) 70 Durometer Black |
. | Resistance to sunlight, weathering and ozone. Poor resistance to petroleum oils and fuel. Good heat and compression set resistance. Basic temperature range: -65 F to +250 F* |
. | Steam / Hot water Hydraulic / Skydrol Auto brake systems Alcohol / Greases |
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| Neoprene® (Chloroprene) 70 Durometer Black |
Good resistance to petroleum oils. Low compression set and good tear and abrasion strength. Good resistance to weathering, sunlight and ozone. Basic temperature range: -40 F to +225 F* |
Refrigeration seals Freon / Air conditioning Motor mounts Engine coolants |
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| Trade Names: Neoprene® (E.I. DuPont) • Bayprene (Mobay) • Butachlor (Ditsugil) |
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| Fluorosilicone | . | Wide range of fluid and chemical resistance. Large temperature range. A mix of Fluorocarbon (Viton) and Silicone. Basic temperature range: -80 F to +350 F* |
. Color | Aircraft fuel systems Jet fuel / Gasoline Petroleum oils Synthetic jet oil |
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| Trade Names: LS (Dow) • FSE (GE) |
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| Kalrez® | High temperature and chemical resistance. Low compression set. Various compounds for specific applications. Basic temperature range: compounds up to +600 F* |
CDP# 4079 Chemicals +600 F CPD# 1050LF Steam +550 F Water |
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| Trade Names: Kalrez® (E.I. DuPont) |
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| PTFE
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. | Excellent temperature range. Various chemical and fuel resistance. Low coefficient of friction. Non-elastic. Basic temperature range: -250 F to +450 F* |
. | High / Low temperatures Chemicals / Fuels PTFE Encapsulation PTFE coating |
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| Trade Names: PTFE ( DuPont Dow Elastomers) |
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Excellent resistance to petroleum products, steam, phosphate esters, amines and brake fluids. Broad range media resistance similar to EPDM and Viton®. Elastomeric form makes it low in gas permeability Basic temperature range: -20 F to +400 F* |
O-rings for various fluids seals. Not readily available in other seal forms. Petroleum fluids and steam, amines, brake fluids or phosphate esters. |
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Aflas® (3M) |
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(Urethane) |
. | Highly resistant to oil swell, ozone, oxidation and abrasion. Highly resilient and having a high tensile strength and elongation properties. An excellent choice for hydraulic seals using petroleum based oils. Basic temperature range: -65 F to +200 F* |
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Hydraulic seals in oil, such as u-cups, o-rings, wipers. *Some Polyurethanes are now available for water and water based fluids at temperatures to 220 F*. Petroleum based oils. |
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Nitrile (HSN/HNBR) |
Excellent abrasion resistance, compression set, tensile and tear properties. A step above standard Nitriles in that it exhibits resistance to ozone, sunlight and other atmospheric conditions. Vastly improved resistants to heat aging. Basic temprature range: -40 F to +300 F* (Short periods up to +300 F*) |
O-rings for various petroleum fluids. Available in other forms for hydraulic seals such as u-cups, vee packings, wipers and back-up rings and special sealing rings. Petrloeum fluids. Water. Silicone fluids. Ehylene glycol. Amines. |
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Therban (Mobay) • Zetpol (Zeon Chemical) • Tornac (Polysar) |
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CALL FREE IN THE U.S. (800) 659-5050 LOCAL & INTERNATIONAL (770) 389-0501 |
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FAX FREE IN THE U.S. (888) 353-7325 LOCAL & INTERNATIONAL (770) 389-0652 |
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Office hours: Monday - Friday, 8:00 a.m. to 5:00 p.m. (ET). On call 24/7 for Seal EMERGENCY! Privacy Policy | Quality Assurance | MSDS Sheet | Terms & Conditions © 1996-2006. EPM, INC. All rights reserved. |
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