- ASTM D1418 Designation
- NR
- ASTM D2000/SAE J200 Type, Class
- AA
- Apple Compound Designation
- NA
- Standard Color
- Black
- Description
- 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.
- Features
-
- 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.
- Limitations
- 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.