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 5925-00-004-5817
NSN 5905-01-571-8206
NSN 5998-01-018-6369
NSN 5999-00-022-9130
NSN 6645-00-226-2270
NSN 4140-01-096-5722
NSN 5990-01-426-7350
NSN 5895-00-001-7072
NSN 5945-00-383-5356
NSN 6685-01-466-2625
NSN 6685-01-197-7703
NSN 6320-01-229-6479