nitrile-butadiene-rubber

This term refers to a specific industrial elastomer prized for its chemical stability. In technical and engineering contexts, it is frequently abbreviated as NBR. It is primarily distinguished from natural rubber by its ability to resist degradation when exposed to petroleum-based fluids.

As a material noun, it functions as an uncountable mass noun. It describes the substance itself rather than individual items, meaning it does not have a plural form in standard technical usage. To refer to specific objects made from this material, one must use a count noun such as gaskets, seals, or O-rings.