A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6645-00-825-2448
NSN 6130-01-536-5384
NSN 6610-01-013-8922
NSN 6110-01-557-8439
NSN 6240-01-621-7222
NSN 5835-00-019-0794
NSN 5999-00-897-9482
NSN 5950-01-075-7275
NSN 6685-01-254-3014
NSN 6240-01-575-0613
NSN 5999-01-062-0739
NSN 5950-01-152-1936