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 6145-01-370-5989
NSN 6130-01-580-2816
NSN 5996-00-648-6580
NSN 5985-00-111-1605
NSN 6130-01-166-8500
NSN 5975-01-500-5011
NSN 6240-00-437-5216
NSN 5960-01-512-0233
NSN 6645-00-075-4764
NSN 6130-00-105-0500
NSN 5975-00-260-1336
NSN 5965-01-093-0642