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 6110-01-581-3148
NSN 6135-00-812-9039
NSN 6610-00-034-3709
NSN 5910-00-981-7179
NSN 5905-01-259-5442
NSN 6105-01-331-5618
NSN 5855-00-821-7512
NSN 5985-01-440-7797
NSN 6645-01-149-4231
NSN 5999-00-439-5277
NSN 5905-01-287-4398
NSN 6150-00-346-1746