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 5999-01-004-8270
NSN 5935-01-186-2421
NSN 6240-00-818-1364
NSN 5950-01-649-8194
NSN 5925-01-463-9258
NSN 6610-00-001-5516
NSN 6135-00-276-7625
NSN 6645-01-282-3624
NSN 6105-00-797-3481
NSN 6145-01-511-9871
NSN 5895-01-558-7434
NSN 5975-01-362-3240