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 6220-00-910-0320
NSN 5996-01-615-6668
NSN 5975-00-044-2101
NSN 6110-01-587-9091
NSN 6620-01-545-3104
NSN 6220-01-051-3865
NSN 5998-01-339-0523
NSN 6220-01-568-9999
NSN 5996-00-100-4932
NSN 5965-01-643-5191
NSN 6135-01-400-2947
NSN 6645-00-585-1840