The U.S. rubber processing industry encompasses a wide variety of production activities ranging

from polymerization reactions closely aligned with the chemical processing industry to the

extrusion of automotive window sealing strips. The industry is regulated by seven Standard

Industrial Classification (SIC) codes [1]:

. SIC 2822: Synthetic Rubber Manufacturing (vulcanizable elastomers);

. SIC 3011: Tire and Inner Tube Manufacturing;

. SIC 3021: Rubber Footwear;

. SIC 3031: Reclaimed Rubber;

. SIC 3041: Rubber Hose and Belting;

. SIC 3069: Fabricated Rubber Products, Not Elsewhere Classified; and

. SIC 3293: Rubber Gaskets, Packing, and Sealing Devices.