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 5996-00-925-1953
NSN 5895-01-581-8665
NSN 6110-00-834-1422
NSN 6220-01-420-6512
NSN 6650-00-692-1541
NSN 6240-01-075-4857
NSN 5895-01-205-1515
NSN 6685-00-560-7210
NSN 5910-01-374-3286
NSN 5945-01-052-9550
NSN 2925-01-027-1293
NSN 5950-01-224-6446