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 5930-01-551-2571
NSN 6110-01-025-6139
NSN 5910-01-237-3282
NSN 5945-01-597-5472
NSN 5999-00-948-0310
NSN 5925-00-615-7071
NSN 6130-00-343-1660
NSN 5905-01-534-3754
NSN 6320-01-422-1212
NSN 6645-00-336-4783
NSN 5915-01-553-7288
NSN 5895-00-901-8849