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 6685-01-260-9156
NSN 6145-00-010-5135
NSN 6110-01-327-3282
NSN 5965-01-522-9247
NSN 6130-00-959-5800
NSN 5910-00-927-9479
NSN 6150-01-044-3909
NSN 5855-00-433-2377
NSN 6620-01-035-7803
NSN 7035-00-631-3782
NSN 5960-00-226-3319
NSN 6685-01-587-2870