ASTM D1418 Designation
ASTM D2000/SAE J200 Type, Class
Apple Compound Designation
Standard Color
Natural Rubber is the vulcanized product of the juice of the Hevea tree (latex).
Key Uses
  • Seals in brake systems. Seals in food and beverage applications.
  • Most popular material for non-hydraulic sealing applications.
  • Mainly used for dampeners due to its ability to absorb vibration.
Temperature Range
Standard Compound: -58°F to +158°F. (Dry Heat Only)
Hardness (Shore A)
40 to 90.
  • Natural Rubber features high tensile strength, high resilience, high abrasion and high tear resistance properties, with a good friction surface and excellent adhesion to metals. Until the invention of synthetic elastomers in the 1930's, Natural Rubber was the only polymer available for o-ring manufacture.
  • Natural Rubber features good resistance to organic acids and alcohols, with moderate resistance to aldehydes.
Not widely used in the sealing industry due to poor compression set performance and lack of resistance to many fluids. Widely banned for medical applications.