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 5950-01-014-4905
NSN 6145-00-448-8264
NSN 5910-01-077-9936
NSN 5998-01-052-6780
NSN 5925-01-441-1841
NSN 5835-00-435-6638
NSN 6620-01-310-4916
NSN 4140-01-564-2258
NSN 5945-00-482-1395
NSN 5998-01-417-3149
NSN 5990-01-376-8930
NSN 5975-00-203-8416