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 5930-00-942-8720
NSN 6240-01-179-1189
NSN 5925-00-494-4685
NSN 5910-01-147-7838
NSN 5985-01-330-3546
NSN 6610-01-266-3447
NSN 7035-01-467-8921
NSN 5998-00-929-3950
NSN 6110-01-039-1151
NSN 6240-01-031-3164
NSN 6135-01-449-7330
NSN 5910-00-733-3883