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 6135-01-272-4047
NSN 5930-01-423-7018
NSN 6220-01-390-4090
NSN 5985-00-291-8583
NSN 6145-01-587-9455
NSN 6135-01-187-0033
NSN 5999-01-644-5791
NSN 5998-01-108-6331
NSN 5985-00-241-9282
NSN 5960-00-927-6716
NSN 5996-00-538-1357
NSN 5975-00-116-0803