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 6110-01-517-3811
NSN 5998-00-050-6611
NSN 5855-01-383-6860
NSN 5998-01-430-2773
NSN 6110-00-989-7176
NSN 5996-01-512-5595
NSN 6150-00-156-6080
NSN 5999-00-914-3949
NSN 5950-00-812-2760
NSN 6620-01-135-0992
NSN 6645-00-819-5045
NSN 6145-00-177-2369