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 6105-01-250-9143
NSN 2925-00-799-5989
NSN 6220-01-612-8224
NSN 5999-00-297-3934
NSN 5965-00-764-1841
NSN 6650-01-483-2399
NSN 5895-01-364-9801
NSN 5855-00-951-6483
NSN 5985-01-612-0188
NSN 5855-01-655-4035
NSN 5998-01-186-3433
NSN 2925-01-053-0886