Material properties of commonly used rubber

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VMQ/EPDM/CR SBR/NBR/NR IIR/FKM/IR/FVMQ ACM/BR/PU/HNBR

Silicone, EPDM and Chloroprene

Material silicone EPDM Chloroprene
Trade name Silastic, Elastosil, GE Silicones Keltan, Vistalon, Royalene Neoprene, Bayprene, Skyprene
Chemical name Polydimethylsiloxane Ethylene Propylene Diene polymer Polychloroprene
ASTM ASTM Designation QMV EPDM CR
Material properties Base polymer (g/cc) 1,0 - 2,0 0,86 1,23 - 1,25
Hardness (ShoreA) 20 - 90 30 - 90 30 - 90
Modulus 100 (psi) 100 - 900 100 - 3000 100 - 3000
Tensile strength (x103 psi) 0,2 - 1,5 0,3 - 3,5 0,5 - 3,5
Extension (%) 100 - 800 100 - 800 100 - 800
Physical characteristics Abrasion resistance E - B B - A B - A
Settlement B - A E - C E - C
Resistance to flex cracking E - A B - A C - B
Impact resistance E - C B - A C - A
Bounce elasticity B - A C - B D - B
Tear strength E - B C - B D - C
Volume resistivity (Ohm - cm) 8 x 1013 - 1 x 1016 3,5 x 103 1 x 1011 - 1 x 1017
Temperature characteristics Crisp point (°C) -50 to -115 -40 to -60 -25 to -50
Max continuous temperature for use, 6 v in air (°C) 315 175 135
Min. continuous operating temperature, 6 v in air (°C) -115 -60 -50
Resistance Gas permeability E - D D - C D - C
Resistance to oxidation A A A
Ozone resistance A A B - A
Resistance to radiation B - A B - A C
Storage time this year: dark, cool, dry & no radiation 20 5 - 10 5 - 10
Resistance to vapour D A C
Weather resistance A A E - C
Water resistance A A D - C
Resistance to chemicals Acids, concentrated E - D A E
Acids, dilute D - C A A
Inorganic acids D - C A C - A
Acids, organic D - C B - A E - A
Alcohols D - C C - A A
Animal & vegetable oils C - A C C
Brake fluids, non-petroleum based A C - A D
Estrar C - A A E
Etrarch E D E
Halogenated solvents E E E
Hydrocarbon, halogenated E E E
Ketones E C - A E - D
Paint, solvent E E E
L.P. gases & fuel oils D E C
Mineral oil E E D - C
Petroleum aromatic E E C
Petroleum non-aromatic C - A E C
Refrigerant ammonia A C A
Refrigerant halofluorocarbons E R12, 13, 22 R11, 12, 13, 22
Refrigerant halofluorocarbons with oil E E R11, 12, 22
Silicone oil E - D A D - A
Adhesion Adhesion to metal C - A C - A A
Adhesion to rigid materials D - A A C - A

 

A=Excellent - B=Very good - C=Good - D=Less good - E=Poor.
The starting value is always from the highest letter (e.g. "D - C" = D).

Styrene-Butadene, Nitrile and Natural

Material Styrene butadene Nitrile Nature
Trade name Ameripol, Buna-S, ASRC Nipol, Buna-N, Hycar, JSR-N, Krynac SMR, SVR, SLR, SCR
Chemical name Styrene Butadiene polymer Acrylonitrile Butadiene polymer Polyisoprene
ASTM ASTM Designation SBR NBR NR
Material properties Base polymer (g/cc) 0,94 1,0 0,93
Hardness (ShoreA) 30 - 98 30 - 98 20 - 98
Modulus 100 (psi) 100 - 1500 100 - 1500 100 - 550
Tensile strength (x103 psi) 0,5 - 3,5 1,0 - 4,0 1,0 - 4,0
Extension (%) 100 - 700 100 - 700 300 - 900
Physical characteristics Abrasion resistance A C - A A
Settlement C - A C - A A
Resistance to flex cracking C C A
Impact resistance A D - C A
Bounce elasticity E - A C C - A
Tear strength D - A C - A C - A
Volume resistivity (Ohm - cm) 5 - 8 x 1013 3,5 x 1010 –
Temperature characteristics Crisp point (°C) -25 to -55 -25 to -60 -25 to -60
Max continuous temperature for use, 6 v in air (°C) 120 120 120
Min. continuous operating temperature, 6 v in air (°C) -55 -50 -60
Resistance Gas permeability D D - C D - C
Resistance to oxidation D - A C C - A
Ozone resistance E - A E - D E
Resistance to radiation E D - C D - C
Storage time this year: dark, cool, dry & no radiation 2 - 5 2 - 5 2 - 5
Resistance to vapour D - C D - C D - C
Weather resistance D - C E - D E - D
Water resistance C - A C - A A
Resistance to chemicals Acids, concentrated E - C D - C D - C
Acids, dilute D - C C C - B
Inorganic acids D - C D - C D - C
Acids, organic E - C E - C D - C
Alcohols C D - C C - A
Animal & vegetable oils E - C C - A E - C
Brake fluids, non-petroleum based E - C E C
Estrar E E E
Etrarch E E E
Halogenated solvents E E E
Hydrocarbon, halogenated E E - D E
Ketones E - C E D - C
Paint, solvent E D - C E
L.P. gases & fuel oils E A E
Mineral oil E A E
Petroleum aromatic E C E
Petroleum non-aromatic E A E
Refrigerant ammonia C C C
Refrigerant halofluorocarbons R12, 13, 22 R11, 12, 13 R12, 13, 22
Refrigerant halofluorocarbons with oil E R11, 12, 13 E
Silicone oil E C C
Adhesion Adhesion to metal A C - A A
Adhesion to rigid materials A C A

 

A=Excellent - B=Very good - C=Good - D=Less good - E=Poor.
The starting value is always from the highest letter (e.g. "D - C" = D).

Butyl, Fluoroelastomer, Isoprene and Fluorosilicone

Material Butyl Fluoroelastomer Isoprene Fluorosilicone
Trade name Exxon Butyl, Polysar Butyl, JSR Butyl Viton, Fluorel Synthetic Polyisoprene Silastic, GE
Chemical name Polyisobutylene Isoprene Plydimethylsiloxane Polyisoprene Fluorovinyl Methyl Siloxane
ASTM ASTM Designation IIR FKM IR FVMQ
Material properties Base polymer (g/cc) 0,92 1,4 - 2,0 0,92 1,1 - 2,2
Hardness (ShoreA) 30 - 90 50 - 95 30 - 98 35 - 80
Modulus 100 (psi) 100 - 800 200 - 2000 100 - 1500 100 - 1000
Tensile strength (x103 psi) 2,0 - 3,0 0,5 - 2,5 2,5 - 4,0 0,5 - 1,4
Extension (%) 300 - 800 100 - 500 100 - 750 100 - 480
Physical characteristics Abrasion resistance D - C C A E
Settlement E - C C - A A D - C
Resistance to flex cracking C - A C A E - C
Impact resistance C C A E - C
Bounce elasticity E - D D - B A A
Tear strength C D - B A A
Volume resistivity (Ohm - cm) 2 x 1016 20 x 1013 – 10 x 1012 - 1 x 1014
Temperature characteristics Crisp point (°C) -25 to -60 -25 to -40 -55 -65
Max continuous temperature for use, 6 v in air (°C) 145 315 80 230
Min. continuous operating temperature, 6 v in air (°C) -60 -40 -50 -60
Resistance Gas permeability C C - A D - C E - C
Resistance to oxidation A A C A
Ozone resistance A A E A
Resistance to radiation E - C D - C D - C D - A
Storage time this year: dark, cool, dry & no radiation 5 - 10 5 - 20 2 - 5 20
Resistance to vapour C - A E - C C D - C
Weather resistance A A A A
Water resistance C - A A E - D A
Resistance to chemicals Acids, concentrated D - A C - A E - C C
Acids, dilute C - A C - A D - C A
Inorganic acids C A C D - A
Acids, organic C - A E - C D - C D - C
Alcohols C - A D - A C D - C
Animal & vegetable oils C A E - C A
Brake fluids, non-petroleum based B - A D C A
Estrar E - D E - B E E - C
Etrarch E E E D
Halogenated solvents E C - A E B
Hydrocarbon, halogenated E - A A E C - B
Ketones D - C E C E
Paint, solvent E E E E
L.P. gases & fuel oils E A E A
Mineral oil E A E C - A
Petroleum aromatic E A E C
Petroleum non-aromatic E A E C
Refrigerant ammonia C E C A
Refrigerant halofluorocarbons R12, 13, 22 R11, 12, 13 R12, 13, 22 R11, 12
Refrigerant halofluorocarbons with oil E R11, 12, 13 E R11, 12
Silicone oil E A C A
Adhesion Adhesion to metal C C - A A C - A
Adhesion to rigid materials D - A D - C A D-C

 

A=Excellent - B=Very good - C=Good - D=Less good - E=Poor.
The starting value is always from the highest letter (e.g. "D - C" = D).

Acrylic, Butadiene, Polyurethane and HNBR

Material Acrylic Butads Polyurethane HNBR
Trade name Hycar, Krynac, ACM Nipol-BR, Buna-CB, JSR-BR Vibrathane Therban, Zetpol
Chemical name Ethyl butyl acrylate copolymer Polybutadiene Polyester or Polyether Urethane Hydrogenated Acrylonitrile Butadiene
ASTM ASTM Designation ACM BR PU HNBR
Material properties Base polymer (g/cc) 1,1 0,94 1,05 1,12
Hardness (ShoreA) 40 - 90 45 - 80 50 - 85 40 - 90
Modulus 100 (psi) 100 - 1500 300 - 1500 250 - 5000 300 - 2900
Tensile strength (x103 psi) 1,2 - 1,5 2,5 - 3,0 1,5 - 8,0 1,5 - 5,0
Extension (%) 100 - 450 100 - 600 150 - 600 150 - 550
Physical characteristics Abrasion resistance D - C A A C - A
Settlement E - C C E - C C - A
Resistance to flex cracking D - C D - A C - A C
Impact resistance E C A A
Bounce elasticity D - C D - A E - B –
Tear strength E - C C - A A D - C
Volume resistivity (Ohm - cm) 7 x 1012 – 0,3 x 1010 - 0,5 x 1014 –
Temperature characteristics Crisp point (°C) -25 to -40 -100 -40 to -70 -40
Max continuous temperature for use, 6 v in air (°C) 200 90 120 145
Min. continuous operating temperature, 6 v in air (°C) -40 -45 -50 -40
Resistance Gas permeability C - A C C - A C
Resistance to oxidation A C C - A A
Ozone resistance C - A C A C - A
Resistance to radiation E - C E - C C - A C
Storage time this year: dark, cool, dry & no radiation 20 2 - 5 2 - 15 2 - 5
Resistance to vapour E D - C E A
Weather resistance E - D C - A C - A A
Water resistance A A A C - A
Resistance to chemicals Acids, concentrated C - A D - C E D - C
Acids, dilute A D - C D - C A
Inorganic acids C - A C E - D D - C
Acids, organic E - C E - C E - D D - C
Alcohols A D - C C A
Animal & vegetable oils D - C E - C D - A A
Brake fluids, non-petroleum based – E - C E D
Estrar C - A E E E - D
Etrarch C - A E D E - D
Halogenated solvents E E E - C E - D
Hydrocarbon, halogenated E E D - C E - D
Ketones D - C C E E - D
Paint, solvent D - C E E D
L.P. gases & fuel oils C - A E D - C A
Mineral oil C - A E C - A –
Petroleum aromatic C - A E C C - A
Petroleum non-aromatic D - C E C E - C
Refrigerant ammonia E - C C E –
Refrigerant halofluorocarbons E - C R12, 13, 22 R12 R11, 12, 112
Refrigerant halofluorocarbons with oil – E E R12, 112
Silicone oil – E A D - A
Adhesion Adhesion to metal D - C D - A C C - A
Adhesion to rigid materials D - C E A D - A

 

A=Excellent - B=Very good - C=Good - D=Less good - E=Poor.
The starting value is always from the highest letter (e.g. "D - C" = D).