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 6650-01-580-1901
NSN 5950-01-411-0156
NSN 5975-01-082-6669
NSN 5930-00-585-7058
NSN 6650-01-347-2291
NSN 5925-00-677-8320
NSN 2925-01-129-1261
NSN 6650-01-044-9860
NSN 5975-01-267-3479
NSN 5910-01-244-2248
NSN 6685-01-467-3035
NSN 5996-00-285-3727