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 5920-00-387-5312
NSN 5925-01-425-8689
NSN 5998-01-537-4484
NSN 5975-01-518-3478
NSN 5920-01-064-0939
NSN 5920-01-469-8991
NSN 6110-00-800-9978
NSN 5895-00-814-5244
NSN 6685-01-286-9555
NSN 5835-00-491-3834
NSN 5975-01-327-7027
NSN 5985-00-868-5229