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 5996-00-456-0895
NSN 5895-01-358-8158
NSN 6610-01-406-4985
NSN 5925-00-828-2267
NSN 5990-00-951-3124
NSN 7035-01-545-0834
NSN 5985-01-529-1013
NSN 5998-01-099-0912
NSN 6110-01-587-2488
NSN 5990-01-438-8228
NSN 5935-01-535-6876
NSN 5996-01-486-3733