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 5960-01-411-5217
NSN 5855-01-218-3735
NSN 5905-01-421-3338
NSN 6320-01-296-3181
NSN 5999-00-856-6460
NSN 5960-01-586-5235
NSN 5930-01-420-6372
NSN 2925-01-363-1805
NSN 5925-01-445-6112
NSN 5925-00-316-5312
NSN 5999-01-481-8028
NSN 5835-00-013-0905