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 6620-01-540-8144
NSN 6620-01-111-9064
NSN 5996-00-902-3445
NSN 5998-01-563-4460
NSN 7035-01-265-0216
NSN 5835-00-233-6327
NSN 6685-01-077-8187
NSN 5965-01-010-1258
NSN 5960-01-018-8596
NSN 4140-01-411-6666
NSN 5975-01-541-4410
NSN 5855-01-158-2709