NAICS 326291: Rubber Product Manufacturing for Mechanical Use

These plants mold and extrude rubber into seals, gaskets, O-rings, grommets, vibration mounts, bushings and other parts for machines and vehicles. Compression, transfer and injection molding are common, as is custom compounding to meet a temperature, oil or chemical-resistance specification. Customers include automotive, fluid-power, appliance and industrial equipment makers. The plants buy natural and synthetic rubber, compounds, presses, molds and test equipment, and a part is usually sold to the engineer who specifies the material before purchasing awards it after samples pass.

NAICS 326291 is the North American Industry Classification System code for Rubber Product Manufacturing for Mechanical Use, a national industry in the Other Rubber Product Manufacturing NAICS industry (32629) of the Manufacturing sector (31-33).

In Factur's 2026 prospecting data, plastics, rubber and molding suppliers turned 26 of 130 quotes into purchase orders, 20%. Compare all five segments: Manufacturing sales by segment, 2026.