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 5930-01-190-8976
NSN 5910-00-792-5341
NSN 5895-01-351-6551
NSN 6610-01-574-3260
NSN 5905-00-089-6854
NSN 6150-01-468-6745
NSN 5999-01-224-2177
NSN 6620-01-401-5356
NSN 5935-01-416-4407
NSN 5855-00-832-9341
NSN 6685-01-227-0389
NSN 5965-01-343-2543