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 6145-01-443-3445
NSN 2925-01-446-6523
NSN 7035-01-644-6715
NSN 6240-01-055-9696
NSN 5905-01-461-3144
NSN 6135-01-273-1253
NSN 5965-00-644-0334
NSN 5925-01-222-7441
NSN 5990-01-645-2592
NSN 5910-00-983-2815
NSN 6650-01-531-1196
NSN 5998-01-426-4590