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 5985-01-232-7314
NSN 6110-01-243-0446
NSN 5998-00-114-0575
NSN 6650-01-280-1778
NSN 5905-01-180-0554
NSN 5855-01-447-1887
NSN 7035-01-429-7954
NSN 6130-01-394-0149
NSN 6620-00-883-1181
NSN 5985-01-360-2114
NSN 5990-00-106-6609
NSN 5905-01-210-3819