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 5905-01-372-9641
NSN 6220-01-462-3526
NSN 6220-01-304-7500
NSN 5855-01-484-6507
NSN 6240-01-469-5719
NSN 5998-00-816-9752
NSN 5835-00-145-3786
NSN 6620-01-413-4170
NSN 7035-01-468-6532
NSN 5975-01-543-1583
NSN 5855-01-495-2670
NSN 5965-00-400-6228