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 5930-01-574-9201
NSN 6105-01-343-4426
NSN 5975-00-296-5040
NSN 5990-00-933-5314
NSN 5990-00-210-2953
NSN 5905-01-267-9276
NSN 4140-00-895-6478
NSN 4140-00-964-8623
NSN 5910-01-358-1016
NSN 5935-00-626-4239
NSN 5985-01-011-3864
NSN 5930-00-078-1450