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 5998-01-512-0300
NSN 5935-01-046-0821
NSN 6145-01-377-4382
NSN 6145-01-596-0490
NSN 2925-01-625-6841
NSN 5990-01-055-1523
NSN 5985-01-281-7333
NSN 7035-01-564-7139
NSN 5920-00-170-4247
NSN 5960-01-449-1310
NSN 6320-01-215-2284
NSN 6685-01-395-3922