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 6645-00-057-3499
NSN 6150-00-814-5905
NSN 5950-00-615-0961
NSN 6110-00-826-0394
NSN 5945-01-479-7773
NSN 6645-01-367-2581
NSN 5960-00-597-2680
NSN 6150-01-463-3639
NSN 5855-01-448-6921
NSN 5945-00-804-6711
NSN 5996-00-991-3100
NSN 5998-01-067-8323