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 5910-00-372-4555
NSN 5895-01-051-3007
NSN 5975-01-024-8486
NSN 6105-01-393-1750
NSN 6135-00-016-0071
NSN 5905-00-798-2343
NSN 6240-00-629-9810
NSN 6610-00-937-0527
NSN 5999-01-378-7546
NSN 5935-01-035-1302
NSN 5965-00-387-3259
NSN 6110-01-478-9941