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 6645-00-998-7820
NSN 6610-01-186-6535
NSN 6105-00-835-2671
NSN 6135-00-078-9931
NSN 5965-00-224-6034
NSN 5999-01-246-1790
NSN 5950-00-528-4423
NSN 6145-01-190-0382
NSN 6685-01-484-0825
NSN 5910-00-105-0072
NSN 6685-00-438-8165
NSN 6320-01-455-3394