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 5985-01-490-7751
NSN 6320-01-335-8336
NSN 5999-01-566-2043
NSN 5965-00-069-2723
NSN 6145-01-364-0346
NSN 6145-01-160-6301
NSN 5945-01-141-3209
NSN 5998-01-608-8866
NSN 6645-01-421-2445
NSN 5925-00-452-1270
NSN 6105-00-300-5643
NSN 5910-00-499-7952