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 5990-00-900-4459
NSN 6150-00-618-0171
NSN 5895-01-104-4410
NSN 6135-00-917-1894
NSN 5835-00-918-8169
NSN 5905-01-362-9968
NSN 6110-00-014-4603
NSN 6220-01-007-1236
NSN 5905-01-337-3436
NSN 6130-00-528-7838
NSN 6320-01-162-5977
NSN 6130-01-476-7747