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 6650-01-176-3257
NSN 5960-01-226-7297
NSN 5998-00-153-9989
NSN 5998-01-463-3108
NSN 5999-00-318-6621
NSN 4140-00-021-7645
NSN 6610-01-518-1264
NSN 5985-01-222-2903
NSN 2925-00-740-7029
NSN 6320-01-600-5808
NSN 5990-00-345-7128
NSN 5855-01-006-1827