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 5975-01-094-2362
NSN 5999-01-344-6378
NSN 6610-01-487-8879
NSN 5925-01-520-8900
NSN 6240-01-237-1481
NSN 5895-00-913-6448
NSN 5985-01-472-2037
NSN 5996-00-167-3531
NSN 6650-01-057-3949
NSN 6135-01-345-6157
NSN 5855-01-589-0121
NSN 5975-00-244-6480