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Rubber (Elastomer) Service Selection Guide
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most demanding applications throughout
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  Rubber (Elastomer) Service Selection Guide
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 do not want to sell you our elastomer, we want to sell you the right elastomer."

Polymer Selection
Common Name Neoprene
ASTM Name Chloroprene
ASTM D1418 designation CR
Specific Gravity (gm/cm3) 1.25

Physical Properties at 21C (70F)

1-Excellent . . . 5-Not Recommeded
Tensile Strength -Reinforced, max (psi) 4000
Elongation % - Reinforced, max 600
Compression Set 2
Resilience 1
Permeability Coef.-Nitrogen(1/10^8cm^2)(1/10sec)(1/10atm) 0.89
Electrical  Resistivity 3
Strain Relaxation 2
Mechanical Properties 1-Excellent . . . 5-Not Recommeded
Impact Strength 2
Abrasion Resistance 1
Tear Resistance 2
Cut Growth 2

Temperature Effects

1-Excellent . . . 5-Not Recommeded
Tensile Strength % change @ 212F -50
Tensile Strength % change @ 350F -74
Elongation % change @ 212F -35
Elongation % change @ 350F -45
Strain Relaxation @ 212F 2
Heat Aging @ 212F 1.5
Flame Resistance 1.5
Low Temp - Tg (glass transition) -40
Low Temp Stiffening (F) 10
Low Temp Brittle Point (F) -85

Environment Resistance

1-Excellent . . . 5-Not Recommeded
Weather--Sunlight Aging 2
Oxidation 1
Ozone 1
Radiation 2
Water 2
Steam 2.5

General Chemical Resistance

1-Excellent . . . 5-Not Recommeded
Alkali (Base) Dilute 1
Alkali (Base) Concentrated 1
Acid Dilute 1
Acid Concentrated 1
Ketones, Oxygenated Solvents (mw < 80) 3
Chlorinated Hydrocarbons, Degreasers 4
Aliphatic Hydrocarbons, Kerosene, etc. 2
Aromatic Hydrocarbons, Benzol, Toluol, etc. 3.5
LP Gases, Fuel Oils 2
Alcohols (mw < 80) 1
Animal and Vegetable Oils 2
Synthetic Lubricants - Diester 4
Brake Fluid, non-petroleum base 3

Hydraulic Fluids Resistance

1-Excellent . . . 5-Not Recommeded
Petroleum Base 3.5
Water Glycol 2
Silicate Ester 2
Phosphate Ester 3

Lubricating Oils Resistance

1-Excellent . . . 5-Not Recommeded
High Aniline (190F +) 2
Low Aniline Point 3

Refrigerants Resistance

1-Excellent . . . 5-Not Recommeded
Ammonia 1
Halogenated r-11, 12, 13, 21, 22
Methyl Chloride 5
Halogenated + Oil r-11, 12, 22

Taste (1=neutral .... 5=foul)

2.5

Odor (1=neutral .... 5=foul)

2.5

Non-Staining

1.5

Bonding to Rigid Materials

1.5

SEALS EASTERN
MOLDING SUCCESS FOR 50 YEARS.

LEGAL NOTICE: Seals Eastern makes no representations or warranties, implied or otherwise, on the accuracy or completeness of the data herein.