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 6240-01-463-3132
NSN 2925-01-252-8049
NSN 5965-01-205-6249
NSN 5975-01-085-4892
NSN 6650-01-470-1315
NSN 5930-01-204-8350
NSN 5910-01-218-2978
NSN 6650-01-452-8302
NSN 6320-01-370-5222
NSN 5999-00-870-4607
NSN 5999-00-584-1867
NSN 6685-00-898-7114