Sheath contraceptives are regulated as Class II medical devices. The foreign manufacturer must be registered with FDA, the device must be listed, and a 510(k) clearance is typically required. Shipments are subject to FDA examination at entry, and products that fail to meet labeling or performance standards may be refused admission. Consult a licensed customs broker or regulatory counsel familiar with FDA device requirements.

The distinction rests on the article's intended use: items designed and marketed for hygienic or pharmaceutical purposes—such as hot-water bottles, ice bags, douches, and contraceptives—belong under 4014. General-purpose rubber articles that are not specifically hygienic or pharmaceutical in character, such as gaskets, floor mats, or erasers, fall under 4016. When an article has dual uses, the principal design purpose and any regulatory classification as a medical device guide the determination.