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 5996-01-419-0664
NSN 6645-00-905-7258
NSN 5960-01-444-2205
NSN 6610-01-498-4063
NSN 5925-01-508-2348
NSN 5985-01-141-0238
NSN 5935-00-203-5773
NSN 5965-01-319-5363
NSN 6685-01-350-1713
NSN 5855-01-366-2429
NSN 6620-01-088-1272
NSN 4140-00-288-8205