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 6320-01-216-1678
NSN 5990-01-573-1634
NSN 5910-01-015-8222
NSN 5975-01-092-8655
NSN 5985-01-264-9865
NSN 5999-01-063-8092
NSN 5905-00-218-1237
NSN 6135-01-031-8078
NSN 6105-01-158-2232
NSN 6320-00-270-8222
NSN 6685-00-757-7584
NSN 2925-00-960-4737