Seals Eastern, Inc.

Rubber, otherwise known as an elastomer or polymer is available in a number of molecular configurations or families. Our Elastomer Selection Guide is designed to let you examine the general properties of any family of elastomer (polymer). The ratings reflect the average performance of an elastomer family. Compounding and manufacturing techniques may improve or degrade the performance level noted in the guide.

"We don’t want to sell you our elastomer, we want to sell you the right elastomer."

Polymer Selection	RubberSynthetic-RubberPolyacrylateFluorocarbon-ElastomerPolybutadieneSBRButyl-HalobutylEP-RubberFluorosiliconeSiliconeUrethanePolyalkylene-Oxide-PolymersFluoroelastomer-TFEPEPDM-RubberHypalonNitrile(highACN)NeopreneNitrile(medACN)Perfluoro-RubberHydrogenated-Nitrile
Common Name	Hydrogenated-Nitrile
ASTM Name	Hydrogenated Nitrile Butadiene Rubber
ASTM D1418 designation	HNBR
Specific Gravity (gm/cm3)	0.95
Physical Properties at 21C (70F)	1-Excellent . . . 5-Poor
Tensile Strength -Reinforced, max (psi)	4350
Elongation % - Reinforced, max	450
Compression Set	1.5
Resilience	2
Permeability Coef.-Nitrogen 1
Electrical  Resistivity	0
Strain Relaxation
Mechanical Properties	1-Excellent . . . 5-Poor
Impact Strength	0
Abrasion Resistance	1
Tear Resistance	0
Cut Growth	0
Temperature Effects	1-Excellent . . . 5-Poor
Tensile Strength % change @ 212F
Tensile Strength % change @ 350F
Elongation % change @ 212F
Elongation % change @ 350F
Strain Relaxation @ 212F
Heat Aging @ 212F
Flame Resistance	0
Low Temp - Tg (glass transition)
Low Temp Stiffening (F)
Low Temp Brittle Point (F)
Environment Resistance	1-Excellent . . . 5-Poor
Weather--Sunlight Aging
Oxidation	2
Ozone
Radiation
Water
Steam	2
General Chemical Resistance	1-Excellent . . . 5-Poor
Alkali (Base) Dilute	1
Alkali (Base) Concentrated	2
Acid Dilute	1
Acid Concentrated	2
Ketones, Oxygenated Solvents (mw < 80)	5
Chlorinated Hydrocarbons, Degreasers	3
Aliphatic Hydrocarbons, Kerosene, etc.	1
Aromatic Hydrocarbons, Benzol, Toluol, etc.	3
LP Gases, Fuel Oils	1
Alcohols (mw < 80)	1
Animal and Vegetable Oils
Synthetic Lubricants - Diester	0
Brake Fluid, non-petroleum base
Hydraulic Fluids Resistance	1-Excellent . . . 5-Poor
Petroleum Base
Water Glycol
Silicate Ester
Phosphate Ester	5
Lubricating Oils Resistance	1-Excellent . . . 5-Poor
High Aniline (190F +)
Low Aniline Point
Refrigerants Resistance	1-Excellent . . . 5-Poor
Ammonia
Halogenated
Methyl Chloride
Halogenated + Oil
Miscellaneous	1-Excellent . . . 5-Poor
Taste (1=neutral .... 5=foul)	2.5
Odor (1=neutral .... 5=foul)	3
Non-Staining
Bonding to Rigid Materials	1

Footnotes:
1 - (1/10^8cm²)(1/10sec)(1/10atm)

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