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 2925-01-648-6859
NSN 6320-00-456-2092
NSN 5835-00-864-4481
NSN 6220-00-466-2681
NSN 5975-01-361-5641
NSN 5910-00-747-9301
NSN 6320-01-195-5583
NSN 5920-01-314-0388
NSN 5960-01-031-1759
NSN 6135-00-134-6648
NSN 6650-00-762-0267
NSN 5998-00-138-5265