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 5925-00-408-5731
NSN 2925-01-122-7812
NSN 6620-01-315-2414
NSN 5930-01-266-6173
NSN 6150-01-212-3835
NSN 6110-01-024-9428
NSN 5996-00-251-3908
NSN 6145-01-391-3551
NSN 5945-01-523-5127
NSN 5999-01-555-4097
NSN 7035-01-311-8424
NSN 6130-01-235-5809