Product Description

Natural Rubber (Black)

In addition to our Light Tan Natural Rubber, our Black Natural Rubber offering exhibits excellent resiliency and abrasion resistance. It has good tear strength and is resistant to water, most salts and mild acids. Black in color. Made in the USA.

Samples available upon request.

Product Image

Key Aspects

Temperature Range: -40°F to +160°F
Durometer Range (Shore A ± 5): 40 to 60
Tensile Range: 2700 psi to 2800 psi
Elongation Range: 500% to 600%
Finishes Available: Smooth, Nylon
Talc: Talc-Free Available
Specification: ASTM D 2000 M1AA
Compound Number(s) Part Number(s)
040R0246 0044223051 0044223054 0044223057 0044227701
0044229229 0044252902 0044254213 0044255131
0044256872 0044262275 0044262276 0044262277
0044262278 0044262279
050R0566 0044227922 0044230184 0044262280 0044262281
0044262282 0044262283 0044262284 0044262285
0044262286 0044262287 0044262288 0044262289
0044262290 0044262291
060R0134 0044225802 0044230199 0044230377 0044242851
0044258931 0044262293 0044262294 0044262295
0044262296 0044262297 0044262298 0044262299
0044262300 0044262301

We comply with the Buy American Act requirements.

Advanced Technical Details

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 Specification
Sheets
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

Compound Numbers: 040R0246(40R246), 050R0566(50R566), 060R0134(60R134)

Unsure on how to read our compound number? Read the page, “How to Read a Compound Number”.

General Information for WARCO Sheet Rubber

Rubber Roll Width

WARCO Sheet rubber rolls are available in 36” or 48” width. Custom widths available up to 55″. Rolls are untrimmed and can measure approximately 3” in additional width. Trimmed rolled rubber is available upon request.

Custom widths are available, please call (714-532-3355) for details.

Standard Minimum Order Quantity

The minimum order quantity for a standard WARCO Sheet rubber is one roll. For custom applications, please call (714-532-3355) for more information.

Rubber Roll Lengths

Standard Roll approximate length ±10%. Products may vary, please see product listing for standard roll lengths.

Sheet Roll Lengths:

  • 1/64″ thick – 180 feet
  • 1/32” thick – 150 feet
  • 1/16” thick – 100 feet
  • 3/32” thick – 65 feet
  • 1/8” thick – 50 feet
  • 3/16” thick – 30 feet
  • 1/4” thick – 25 feet
  • 5/16” thick – 20 feet
  • 3/8” thick – 16.5 feet
  • 1/2” thick – 12.5 feet

Sheet Rubber Thickness Tolerances

Closer tolerances and Custom thicknesses are available and can be priced on request.

WARCO Thickness Tolerance – Standard RMA

  • 0.031” & thinner: ± 0.010″
  • 0.032″ to 0.061″: ± 0.012″
  • 0.062″ to 0.124″: ± 0.016″
  • 0.125″ to 0.186″: ± 0.020″
  • 0.187″ to 0.374″: ± 0.031″
  • 0.375″ to 0.500″: ± 0.047″
  • 0.501″ to 0.750″: ± 0.094″
  • 0.751″ & thicker: ± 10%

Sheet Rubber Finish

Unless otherwise noted, sheet rubber has a standard smooth finish. Textured (fabric) finish and matte finish are available on most materials at an additional cost. Please call for details.

Sheet Rubber Color

The standard color of our sheet rubber is black, unless noted otherwise. Custom colors and color matching is available.

Test Reports

Short form test results, basic physicals, are available upon request at the time of the order. Full test reports for particular specifications will be also quoted on request. This may include certifying the ozone resistance, heat ageing, compliances, and many more aspects of our product. Certifications are sent with your order upon request at no charge.

More information about the WARCO products is available at General Product Information.

Our rubber products are a proprietary blend of various polymers formulated to meet stated physicals and specifications. The named product polymer is not necessarily the primary polymer representing the highest percentage of the polymer blend. Determination of the suitability of the goods for the uses and applications contemplated by Buyer and others shall be the sole responsibility of the Buyer or user. No guaranty is given with respect to length of service on any particular application. Suggestions or recommendations made by Seller in its product literature concerning uses or applications of the goods are believed to be reliable, but Seller makes no warranty or guaranty of results to be obtained since the conditions of the use and application by Buyer and others are beyond Seller’s control. The specification listed here, ASTM, stands for the American Society for Testing and Materials which is the developer and provider of voluntary consensus standards, related technical information, and services. Their website can be found here: https://www.astm.org/.

View complete Terms & Conditions of Sale for suitability of use and formulations

Other Natural Rubber Sheet Products

Protein Free (Synthetic Polyisoprene) Natural Rubber

  • Durometer: 40
  • Temperature Range: -40°F to +160°F
  • Specs: ASTM D 2000 M1AA 417, FDA Approved Ingredients per 21 CFR 177.2600

Pure Gum Floating Natural Rubber

  • Durometer: 40
  • Temperature Range: -40°F to +160°F
  • Specs: ASTM D2000 M1AA 417, FDA Approved Ingredients

EZ Cut Non-Floating Gum Natural Rubber

  • Durometer: 40
  • Temperature Range: -40°F to +160°F
  • Specs: ASTM D2000 M1AA

Tuff-Stuff® Natural Rubber

  • Durometer: 40
  • Temperature Range: -40°F to +160°F
  • Specs: ASTM M4AA