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 6105-01-106-3221
NSN 5999-01-525-8222
NSN 5905-01-343-9718
NSN 5990-01-485-8874
NSN 4140-01-511-6039
NSN 6650-01-195-3957
NSN 4140-00-442-6373
NSN 5985-01-152-8751
NSN 6145-01-418-5738
NSN 5985-01-365-7705
NSN 6135-01-062-9356
NSN 5950-00-772-6668