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 6150-01-329-0916
NSN 5905-00-165-3284
NSN 6240-01-459-2156
NSN 6110-00-236-4161
NSN 5905-01-225-0692
NSN 5910-00-234-0586
NSN 6650-00-045-8355
NSN 5835-00-827-1904
NSN 5835-00-148-9719
NSN 5895-01-026-1252
NSN 6220-01-454-4022
NSN 6620-01-512-2016