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 6320-01-138-0442
NSN 6610-01-091-3740
NSN 7035-01-440-8877
NSN 5998-00-201-0230
NSN 6150-01-197-5728
NSN 5920-00-071-6917
NSN 5965-01-611-5918
NSN 5996-01-382-9710
NSN 5965-01-366-4650
NSN 7035-01-331-5614
NSN 5905-00-032-0019
NSN 5915-01-147-2286