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 5960-01-469-2006
NSN 5965-01-501-5638
NSN 5998-01-005-9306
NSN 2925-01-250-2731
NSN 6650-00-035-9297
NSN 5930-00-255-4173
NSN 5905-01-161-2019
NSN 2925-01-025-0082
NSN 5905-01-431-5232
NSN 6645-01-023-8020
NSN 6150-01-069-3494
NSN 5925-01-176-6569