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 5990-01-340-3575
NSN 5965-00-479-9567
NSN 5950-00-451-1384
NSN 5975-00-894-1125
NSN 6105-01-599-9665
NSN 6220-01-599-6880
NSN 5985-00-146-0118
NSN 6135-00-932-3136
NSN 6610-01-476-6891
NSN 5945-01-187-7979
NSN 5925-00-612-7159
NSN 6110-01-502-4335