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 6620-01-034-4539
NSN 2925-01-478-8191
NSN 5975-01-632-0141
NSN 6645-01-440-7670
NSN 2925-01-127-0167
NSN 5975-00-188-7764
NSN 5905-00-432-3198
NSN 5975-01-319-6259
NSN 5905-00-800-0698
NSN 5985-01-418-1999
NSN 5996-01-049-5452
NSN 6105-01-500-0891