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 5915-01-655-1413
NSN 5835-01-387-4227
NSN 5990-00-311-1031
NSN 6685-00-006-9949
NSN 6240-01-390-8672
NSN 5915-01-414-6433
NSN 5835-00-898-0201
NSN 4140-01-335-6248
NSN 5920-01-620-2543
NSN 5965-01-648-2314
NSN 5998-01-511-0109
NSN 6620-01-643-5531