Natural Rubber/ Gum rubber

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Natural Rubber

Natural Rubber (NR)- can have many different names, Isoprene, Polyisoprene, but is most commonly known as Gum Rubber. Using NR 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. 

Categories

Natural Rubber- Style 28– 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 177.2600Good 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. 

Durometer
Hardness
(Shore A ± 5)
Compound Thickness
(inches)
Tensile (psi) Ultimate
Elongation (%)
Estimated Weight
Per Linear Foot
(1/8" x 36")
Specifications
Minimum Minimum
40 8031 & 8131 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. 

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
040R0246
1/64 - 1/4 36, 48 2800 600 -40°F to +160°F 1.91 lb ASTM D 2000
M1AA 417
50
050R0566
1/64 - 1/4 36, 48 2700 550 -40°F to +160°F 2.07 lb ASTM D 2000
M1AA 517
60
060R0134
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.

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
040R0579
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.

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
040R0526
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.

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

General Information

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 

Physical Properties

Elongation: 500% to 900% 

Hardness Range (Durometer Shore A): 30 to 85 

 

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 

 

Thermal Properties

Minimum Service Temperature: -70°F 

Maximum Service Temperature: +180°F 

 

For complete information regarding environmental resistance and chemical resistance give us a call and our trained and knowledgeable staff will be able to answer your questions.