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 5960-01-267-4957
NSN 6130-01-350-3585
NSN 5855-01-205-7030
NSN 5996-00-961-6411
NSN 5855-00-400-2622
NSN 6620-01-406-3584
NSN 5950-01-273-5261
NSN 6685-00-500-6933
NSN 2925-01-047-9189
NSN 5945-00-570-0136
NSN 6645-01-632-9074
NSN 5999-00-204-6642