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 5998-01-184-5530
NSN 4140-01-197-0406
NSN 5960-01-623-9896
NSN 2925-00-880-4061
NSN 6135-01-382-9278
NSN 5998-00-368-0439
NSN 5925-00-170-4090
NSN 5935-01-157-9613
NSN 5910-00-850-9400
NSN 5910-01-113-9807
NSN 5996-00-401-8063
NSN 6620-01-312-6350