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 6610-01-327-3187
NSN 5905-00-898-4289
NSN 6240-01-517-2994
NSN 2925-01-468-7073
NSN 5985-00-617-9043
NSN 4140-00-108-5688
NSN 5935-01-353-3166
NSN 6645-01-544-3581
NSN 6240-01-415-6004
NSN 5920-01-066-6926
NSN 5996-00-164-5861
NSN 5855-00-688-9954