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 5985-00-165-3606
NSN 6150-01-310-2498
NSN 6650-01-242-2508
NSN 6110-01-160-9142
NSN 6685-01-401-5360
NSN 6240-01-388-1739
NSN 6150-00-436-7929
NSN 4140-01-592-3042
NSN 5905-01-127-1327
NSN 6610-00-186-9180
NSN 6240-00-423-9575
NSN 5855-01-308-0955