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 5905-01-509-1687
NSN 6650-01-322-6110
NSN 6685-00-296-0392
NSN 5925-00-114-2253
NSN 6135-01-462-4442
NSN 5895-00-473-9673
NSN 6110-00-787-6070
NSN 5910-01-559-3402
NSN 5920-01-628-8384
NSN 5985-01-179-7198
NSN 6135-01-120-9812
NSN 2925-01-457-5649