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 6240-01-104-5693
NSN 5935-01-348-3805
NSN 6610-01-112-8137
NSN 5999-00-776-6084
NSN 6150-00-140-8270
NSN 5999-01-281-5593
NSN 5998-01-148-0170
NSN 6240-01-297-4329
NSN 5905-01-102-1424
NSN 5930-01-015-2501
NSN 6110-01-220-4119
NSN 6105-01-082-3101