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 5998-01-578-6064
NSN 5998-00-871-5693
NSN 5990-01-124-9063
NSN 6135-00-470-7779
NSN 5855-01-423-1768
NSN 5950-01-425-8652
NSN 7035-00-803-3056
NSN 6685-01-117-0892
NSN 6145-00-539-9799
NSN 6320-01-576-6310
NSN 2925-00-546-3129
NSN 5910-01-496-6521