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 5910-01-199-9459
NSN 6220-01-471-7678
NSN 5990-00-067-6791
NSN 6610-00-277-7206
NSN 6105-00-581-5331
NSN 6135-01-297-5565
NSN 6620-00-100-4517
NSN 5910-01-381-2110
NSN 5920-01-376-4422
NSN 5925-01-194-9600
NSN 6240-01-521-7867
NSN 6150-00-502-9593