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 5920-00-050-4976
NSN 6645-00-363-9775
NSN 6110-01-384-2319
NSN 6610-01-353-9326
NSN 5990-00-167-2692
NSN 7035-01-392-8255
NSN 5915-01-089-7554
NSN 6685-00-760-6694
NSN 6650-01-601-5756
NSN 6145-00-281-8161
NSN 2925-00-720-3948
NSN 5925-01-056-3548