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 5930-01-524-3260
NSN 6135-01-033-5052
NSN 6105-01-327-7354
NSN 5905-01-554-3282
NSN 5895-00-007-9847
NSN 5996-01-310-6240
NSN 5910-00-499-7952
NSN 7035-01-048-7122
NSN 5985-00-581-2820
NSN 5985-01-648-3317
NSN 5895-00-398-0029
NSN 5996-01-442-5218