Natural Rubber
NATURAL RUBBER
Natural rubber can have many different names, Isoprene, Polyisoprene, but is most commonly known as Gum Rubber. Using natural rubber has many advantages such as high tensile strength, superior resistance to tearing and abrasion, and excellent rebound elasticity. Good flexibility at low temperatures but has less resistance to heat, ozone, and sunlight. This material has exceptional adhesion quality to fabrics and metals but has very little resistance to oils, gasoline and hydrocarbon solvents.
NATURAL RUBBER PROPERTIES
Generally Resistant to: Abrasion, Flex-Cracking, Impact, Water, and Staining
Generally Attacked by: Solvents, Flame, Weather, Ozone, and Sunlight
ASTM D 2000 / SAE J200 Classification: AA
MIL-R-3065 / SAE J-14 / MIL-STD-417 Classification: RN
ASTM D-1418 Designation: NR
MECHANICAL PROPERTIES
Compression Set: Excellent
Rebound Rating: Excellent
Flex Cracking Resistance: Excellent
Abrasion Resistance: Excellent
Tear Resistance: Very Good
Impact Resistance: Excellent\Flame Resistance: Poor
PHYSICAL PROPERTIES
Elongation: 500% to 900%
Hardness Range (Durometer Shore A): 30 to 85
THERMAL PROPERTIES
Minimum Service Temperature: -70°F
Maximum Service Temperature: +180°F
STORAGE CONDITIONS
Store in a cool, dry place with temperature below 75°F.
Keep away from direct heat or open flames.
Avoid contact with solvents or other fluids.
Do not store in direct sunlight.
Keep products wrapped or sealed to minimize the absorption of moisture.
Store in a relaxed condition free from tension, compression or other deformation.
TYPES OF NATURAL RUBBER
NATURAL RUBBER
With a smooth finish this rubber offers excellent physical properties such as superior resilience, tensile, elongation, and abrasion resistance. Produced entirely with FDA approved ingredients per 21 CFR 177.2600. Good tear strength and is resistant to water, most salts, mild acids and other chemicals. Not suited for environments involving ozone, strong acids, animal fats, oils, greases and most hydrocarbons. Non-marking and safe to use for repeated food exposure. Versatile in a temperature range from -20°F to +140°F.
Specifications:
| Durometer Hardness (Shore A ± 5) | Thickness (inches) | Tensile (psi) | Ultimate Elongation (%) | Estimated Weight Per Linear Foot (1/8″ x 36″) | Specifications |
|---|---|---|---|---|---|
| Minimum | Minimum | ||||
| 40 | 1/16 – 1 | 3000 | 600 | 1.9 lb | ASTM D 2000 1AA 430, SAE J200 1 AA 430, FDA Approved Ingredients per 21 CFR 177.2600 |
PURE GUM NATURAL RUBBER
A natural rubber with a smooth finish that does not have any synthetic compounds. This product is soft, allowing it to have great elasticity when under high stress offering superior resilience, tensile, elongation and abrasion resistance properties. Produced entirely with FDA approved ingredients per 21 CFR 177.2600. It has good tear strength and resistance to water, salts and mild acids. Not suited for environments involving ozone, strong acids, animal fats, oils, greases, and most hydrocarbons. Non-marking and safe to use for repeated food exposure.
Specifications:
| Durometer Hardness (Shore A ± 5) | Thickness (inches) | Width (inches) | Tensile PSI | Ultimate Elongation Percent | Temperature Range | Estimated Weight Per Linear Foot (1/8″ x 36″) | Specifications |
|---|---|---|---|---|---|---|---|
| 40 | 1/64 – 1/4 | 36, 48 | 2800 | 600 | -40°F to +160°F | 1.91 lb | ASTM D 2000 M1AA 417 |
| 50 | 1/64 – 1/4 | 36, 48 | 2700 | 550 | -40°F to +160°F | 2.07 lb | ASTM D 2000 M1AA 517 |
| 60 | 1/64 – 1/4 | 36, 48 | 2700 | 500 | -40°F to +160°F | 2.28 lb | ASTM D 2000 M1AA 617 |
EZ CUT GUM NATURAL RUBBER
Offers a smooth finish with superior resilience, tensile, elongation and abrasion resistance properties. This material has good tear strength and is resistant to water, salts, mild acids, and many other chemicals.
Specifications:
| Durometer Hardness (Shore A ± 5) | Thickness (inches) | Width (inches) | Tensile PSI | Ultimate Elongation Percent | Temperature Range | Estimated Weight Per Linear Foot (1/8″ x 36″) | Specifications |
|---|---|---|---|---|---|---|---|
| 40 | 1/64 – 1/4 | 36, 48 | 3000 | 600 | -40°F to +160°F | 2.19 lb | ASTM D 2000 M1AA 417,FDA approved ingredients per 21CFR 177.2600 |
PROTEIN FREE (SYNTHETIC POLYISOPRENE) NATURAL RUBBER
This material comes with a smooth finish and represents a synthetic polyisoprene which does not contain protein, which can cause allergic reactions in some cases. All materials are made with FDA approved ingredients per 21CFR 177.2600.
Specifications:
| Durometer Hardness (Shore A ± 5) | Thickness (inches) | Width (inches) | Tensile PSI | Ultimate Elongation Percent | Temperature Range | Estimated Weight Per Linear Foot (1/8″ x 36″) | Specifications |
|---|---|---|---|---|---|---|---|
| 40 | 1/64 – 1/4 | 36, 48 | 2800 | 600 | -40°F to +160°F | 1.91 lb | ASTM D 2000 M1AA 417,FDA approved ingredients per 21CFR 177.2600 |
TUFF–STUFF® NATURAL RUBBER
At DRC we offer Tuff-Stuff® Natural Rubber which is an outstanding abrasion resistant material. The material delivers an optimum combination of tear, abrasion, noise, and impact resistance resulting in reduced maintenance costs and longer service life from capital equipment. Specially formulated and field proven to deliver the ultimate durability and long life for high production mineral and aggregate facilities.
Specifications:
| Durometer Hardness (Shore A ± 5) | Thickness (inches) | Width (inches) | Tensile PSI | Ultimate Elongation Percent | Temperature Range | Estimated Weight Per Linear Foot (1/8″ x 36″) | Specifications |
|---|---|---|---|---|---|---|---|
| 40 | 1/8 – 2 | 36, 48 | 3200 | 600 | -40°F to +160°F | 1.93 lb | ASTM D 2000 M4AA 421 F17 G21 |
NATURAL RUBBER APPLICATIONS
- Natural rubber is a good water repellent.
- Natural rubber is used in condoms and surgical and medical examination gloves due to being a good protection against pathogens such as the AIDS virus (HIV).
- Natural rubber works well as a spring material.
Common industries include:
- Medical
- Automotive
