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 5950-00-658-9613
NSN 5999-01-641-9596
NSN 6240-00-155-7779
NSN 4140-01-203-5128
NSN 6145-00-275-4046
NSN 6110-00-407-3013
NSN 5998-01-136-0653
NSN 6135-01-380-0059
NSN 5835-01-552-8365
NSN 6130-00-299-6920
NSN 6145-00-570-0516
NSN 5905-01-034-2916