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 5925-00-089-9928
NSN 6685-01-345-4466
NSN 5998-01-530-1095
NSN 6135-01-534-3007
NSN 5965-00-563-1882
NSN 6220-01-071-5364
NSN 6110-00-663-4054
NSN 5950-01-580-0598
NSN 5910-01-058-6468
NSN 6135-01-577-5532
NSN 5905-01-497-9567
NSN 5985-00-516-2373