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 6620-01-018-9488
NSN 6135-00-404-7683
NSN 5905-01-557-8596
NSN 5950-00-752-4679
NSN 6645-00-171-9251
NSN 6145-00-477-4986
NSN 6320-01-328-6575
NSN 6105-01-303-6695
NSN 5925-00-858-7151
NSN 5895-01-067-1098
NSN 5985-01-658-3407
NSN 5960-00-061-1171