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 5835-01-464-7038
NSN 5965-01-012-1065
NSN 5990-00-386-4951
NSN 6650-00-617-9896
NSN 6645-01-415-3894
NSN 6650-01-213-1231
NSN 6130-01-207-0755
NSN 2925-01-322-9780
NSN 5930-00-295-3859
NSN 5998-01-506-9830
NSN 5925-01-658-2041
NSN 5960-00-870-2654