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 6145-00-089-6945
NSN 2925-00-567-3643
NSN 5950-01-556-7989
NSN 5996-01-587-6985
NSN 5965-00-486-7907
NSN 5930-01-366-0186
NSN 5920-01-099-8998
NSN 5960-00-447-0689
NSN 5999-01-438-6885
NSN 6685-01-536-0206
NSN 5835-01-468-6170
NSN 6145-00-471-3975