Rubber Polymers
The chart below lists rubber polymers and their properties to aid in the material selection process. It represents a consensus of recommendations obtained through studies of technical literature, claims by polymer manufacturers and field testing. We have presented the basic values of the various polymers as well as characteristics developed through proper selection of reinforcing agents, plasticizers, activators and curing materials. For example, a natural rubber compound developed specifically for high resilience and/or abrasion would not necessarily have good low temperature characteristics, even though the chart shows excellent. For more information on these materials, please contact us.
CHART 1
- Natural Rubber
- Polyisoprene Rubber
- Styrene-butadiene Rubber
- Ethylene-propylenediene Polymer
- Isobutylene-isoprene Rubber
| POLYMER | Natural Rubber | Poly- isoprene Rubber |
Styrene- butadiene Rubber |
Ethylene- propy- lenediene Polymer |
Isobutylene- isoprene Rubber |
Characteristics |
|||||
ASTM D-1418 Designation |
NR | IR | SBR | EPDM | IIR |
Common and Trade Names |
Smoked Sheet, Crepe, SMR, SIR | Natsyn | GRS Buna-S | Dutral, Nordel Royalene, Vistalon | Butyl |
ASTM D2000-SAE J200 Material Designation (Type & Class) |
AA | AA | AA, BA | AA, BA, CA, DA | AA, BA |
Specific Gravity (Polymer) |
0.93 | 0.94 | 0.94 | 0.85 | 0.92 |
Relative Cost: SBR=1.00 |
1 | 1.5 | 1 | 1.5 | 2 |
Hardness Range Shore A Durometer |
30 – 100 | 30 – 90 | 40 – 95 | 30 – 90 | 30 – 90 |
Maximum Tensile (PSI) |
4000 | 3500 | 2500 | 2500 | 2000 |
Heat Resistance Intermittent |
210°F | 210°F | 220°F | 300°F | 300°F |
Continuous |
180°F | 180°F | 200°F | 260°F | 250°F |
Low Temperature Resistance |
E | E | G | E | E |
F.D.A. Approved |
C | C | C | C | C |
Abrasion Resistance |
E | G | G | F | G |
Adhesion to Metals |
E | G | G | F – G | F – G |
Color Adaptability |
E | E | G | G | G |
Color Resistance to Fading |
F | F | F | G | G |
Compression Set |
G | G | G | G | G |
Fire Resistance |
C | C | C | C | C |
Flex Cracking Resistance |
E | G | E | G | E |
Electrical Insulation Properties |
E | E | G | E | E |
Odor Characteristics |
C | C | C | C | C |
Taste Characteristics |
C | C | C | C | C |
Ozone Resistance |
NR | NR | NR | E | G |
Impermeability to Gases |
F | F | F | F | E |
Radiation (Gamma) Resistance |
E | G | G | E | G |
Recovery after Distortion |
E | G | G | F – G | F |
Staining & Nonmarking Suitability |
G | G | G | G | G |
Tear Resistance HOT |
G | F | F | F | G |
Tear Resistance COLD |
E | G | G | G | G |
Weather Aging (Florida) |
F | F | F | E | G |
Acids, Dilute |
F | F | F | E | E |
Alkalies |
G | G | F | G | G |
Alcohol, Glycols |
E | E | E | E | E |
Animal Oils & Fat |
NR | NR | NR | G | G |
Brake Fluid Non Petrol Base |
G | G | G | G | G |
Gasoline-Hi Test (5) |
NR | NR | NR | NR | NR |
Lubricating Oils High Aniline (6) |
NR | NR | NR | NR | NR |
Low Aniline (7) |
NR | NR | NR | NR | NR |
Lubricants Sulphur Bearing (8) |
NR | NR | NR | NR | NR |
Naptha, Kerosene |
NR | NR | NR | NR | NR |
Benzene, Toluene |
NR | NR | NR | NR | NR |
Carbon Tet, Trichlorethylene |
NR | NR | NR | NR | NR |
Soaps, Bleaches, Detergents to 1800 1/4 |
F | F | F-G | E | G |
Steam |
NR | NR | F | E | G |
Vegetable Oils |
NR | NR | NR | G | G |
Water to 1800 1/4 |
F | F | G | E | E |
CODE: |
E – Excellent G – Good F – Fair NR – Not Recommended C – Consult Us |
||||
(2) NBR PVC Blends have good resistance to fading.
(3) NBR PVC Blends have good ozone
resistance.
(4) NBR PVC Blends have good weather aging resistance.
(5) ASTM Fuel B.
(6) ASTM No. 1 Oil.
(7) ASTM No. 3 Oil.
(8) Polyacrylate recommended.
CHART 2
- Polybutadiene Rubber
- Polychloroprene Rubber
- Nitrile Elastomer
- Urethane Rubber
- Fluroelastomer
- Silicone elastomer
| POLYMER | Poly- butadiene Rubber |
Poly- chloro- prene Rubber |
Nitrile Elastomer | Urethane Rubber | Fluro- elastomer |
Silicone Elastomer |
Characteristics |
||||||
ASTM D-1418 Designation |
BR | CR | NBR | AU, EU | FKM | VMQ FVMQ PVMQ |
Common and Trade Names |
Cis-4 Taktene Budene | Neoprene Baypren Butachlor | Europrene Buna-N, Paracril Chemigum Nipol, Krynac | Adiprene Millathane Vibra- thane |
Viton Fluorel Techno- flon |
Silastic Elastosil |
ASTM D2000-SAE J200
Material Designation (Type & Class) |
AA | BC, BE | BF, BG, BK, CH | BG | HK | FC, FE, FK, GE |
Specific Gravity (Polymer) |
0.92 | 1.23 | 1 | 1.2 | 1.8 | 1.1 |
Relative Polymer Cost: SBR=1.00 |
1.5 | 2.7 | 1.5 | 6.5 | 30 | 3.00 – 35.00 |
Hardness Range Shore A Durometer |
40 – 90 | 40 – 90 | 30 – 95 | 40 – 90 | 60 – 90 | 30 – 80 |
Maximum Tensile (P.S.I.) |
3000 | 3000 | 3000 | 4500 | 2000 | 1200 |
Heat Resistance Intermittent |
200 1/4°F | 250 1/4°F | 240 1/4°F | 180 1/4°F | 500 1/4°F | 600 1/4°F |
Continuous |
160 1/4°F | 220 1/4°F | 210 1/4°F | 180 1/4°F | 450 1/4°F | 500 1/4°F |
Low Temperature Resistance |
E | F – G | G | F – G | F | E |
F.D.A. Approved |
C | C | C | C | C | C |
Abrasion Resistance |
E | G | G | E | G | F |
Adhesion to Metals |
G | E | G | F – G | G | F-G |
Color Adaptability |
G | G | G | G | NR | E |
Color Resistance to Fading |
F | F | F(2) | G | NR | G |
Compression Set |
G | G | G | G | G | E |
Fire Resistance |
NR | E | NR | NR | E | F – G |
Flex Cracking Resistance |
G | G | F – G | G | F | F – G |
Electrical Insulation Properties |
E | F | NR | F | G | E |
Odor Characteristics |
C | C | C | C | C | C |
Taste Characteristics |
C | C | C | C | C | C |
Ozone Resistance |
NR | G | NR(3) | E | E | E |
Impermeability to Gases |
F | G | G | F | G | NR |
Radiation (Gamma) Resistance |
NR | F | G | G | F | F |
Recovery after Distortion |
E | G | G | G | G | G |
Staining & Nonmarking Suitability |
G | G | G | G | NR | G |
Tear Resistance HOT |
G | G | F | E | F | F |
COLD |
G | G | F | E | F | F |
Weather Aging (Florida) |
F | E | F(4) | G | E | E |
Acids, Dilute |
G | G | G | NR | E | G |
Alkalies |
G | G | G | G | G | E |
Alcohol, Glycols |
E | E | E | NR | NR | E |
Animal Oils & Fat |
NR | G | E | G | E | G |
Brake Fluid Non Petrol Base |
G | NR | NR | NR | NR | G |
Gasoline-Hi Test (5) |
NR | NR | F | F | E | NR |
Lubricating Oils High Aniline (6) |
NR | G | E | G | E | E |
Low Aniline (7) |
NR | NR | G | G | E | E |
Lubricants Sulphur Bearing (8) |
NR | NR | F | NR | F | NR |
Naptha, Kerosene |
NR | F | G | G | E | F |
Benzene, Toluene |
NR | NR | F | NR | G | NR |
Carbon Tet, Trichlorethylene |
NR | NR | NR | NR | G | NR |
Soaps, Bleaches, Detergents to 1800 |
F | G | F-G | C | G | F |
Steam |
NR | F | F-G | NR | F | F |
Vegetable Oils |
F | F | E | G | E | E |
Water to 1800 |
F | G | G | C | E | F |
Weather Aging (Florida) |
F | E | F(4) | G | E | E |
Acids, Dilute |
G | G | G | NR | E | G |
Alkalies |
G | G | G | G | G | E |
Alcohol, Glycols |
E | E | E | NR | NR | E |
Animal Oils & Fat |
NR | G | E | G | E | G |
Brake Fluid Non Petrol Base |
G | NR | NR | NR | NR | G |
Gasoline-Hi Test (5) |
NR | NR | F | F | E | NR |
Lubricating Oils High Aniline (6) |
NR | G | E | G | E | E |
Low Aniline (7) |
NR | NR | G | G | E | E |
Lubricants Sulphur Bearing (8) |
NR | NR | F | NR | F | NR |
Naptha, Kerosene |
NR | F | G | G | E | F |
Benzene, Toluene |
NR | NR | F | NR | G | NR |
Carbon Tet, Trichlorethylene |
NR | NR | NR | NR | G | NR |
Soaps, Bleaches, Detergents to 1800 |
F | G | F-G | C | G | F |
Steam |
NR | F | F-G | NR | F | F |
Vegetable Oils |
F | F | E | G | E | E |
Water to 1800 |
F | G | G | C | E | F |
CODE: |
E – Excellent G – Good F – Fair NR – Not Recommended C – Consult Us |
|||||
(2) NBR PVC Blends have good resistance to fading.
(3) NBR PVC Blends have good ozone
resistance.
(4) NBR PVC Blends have good weather aging resistance.
(5) ASTM Fuel B.
(6) ASTM No. 1 Oil.
(7) ASTM No. 3 Oil.
(8) Polyacrylate recommended.
Lavelle is a Rubber Product Manufacturer
