Natural Rubber

NATURAL RUBBER

Nature 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.

 

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 GUM 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
MinimumMinimum
401/16 – 130006001.9 lbASTM 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
401/64 – 1/436, 482800600-40°F to +160°F1.91 lbASTM D 2000
M1AA 417
501/64 – 1/436, 482700550-40°F to +160°F2.07 lbASTM D 2000
M1AA 517
601/64 – 1/436, 482700500-40°F to +160°F2.28 lbASTM 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
401/64 – 1/436, 483000600-40°F to +160°F2.19 lbASTM 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
401/64 – 1/436, 482800600-40°F to +160°F1.91 lbASTM 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
401/8 – 236, 483200600-40°F to +160°F1.93 lbASTM D 2000 M4AA 421 F17 G21

 

APPLICATIONS

Natural rubber forms an excellent barrier to water. Common industries include:

  • Medical
  • Automotive