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 6620-01-006-4899
NSN 5930-01-344-6637
NSN 5905-01-417-2183
NSN 6135-01-347-0201
NSN 6650-00-842-5463
NSN 6145-01-421-2458
NSN 2925-01-004-5627
NSN 5985-01-533-5416
NSN 6685-01-413-4632
NSN 6135-01-627-3786
NSN 5835-00-111-2953
NSN 5945-00-498-0199