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 5945-00-109-4504
NSN 6610-00-308-9034
NSN 6650-01-209-2409
NSN 5996-01-648-0405
NSN 5945-01-057-9248
NSN 6130-01-441-0572
NSN 6685-01-252-4255
NSN 5999-01-545-7739
NSN 6150-00-403-3762
NSN 2925-01-308-4764
NSN 2925-00-740-7029
NSN 6320-01-359-3921