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 5960-00-319-8436
NSN 5996-01-323-6008
NSN 5950-01-237-6917
NSN 5905-01-256-6721
NSN 5985-00-073-2958
NSN 7035-01-445-3563
NSN 5905-00-389-6252
NSN 6110-01-576-5934
NSN 6685-01-017-6444
NSN 5835-01-091-8353
NSN 5930-01-158-5694
NSN 2925-01-027-1293