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 5975-01-604-2046
NSN 5965-01-345-9480
NSN 6135-01-273-1253
NSN 4140-01-383-7274
NSN 5935-01-520-3698
NSN 5975-00-149-0676
NSN 6685-01-596-6846
NSN 6220-00-541-8515
NSN 5996-00-285-3727
NSN 5999-01-245-6970
NSN 5835-00-419-6576
NSN 5935-00-147-2983