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 6685-00-225-8571
NSN 6610-01-452-2715
NSN 5975-01-011-0004
NSN 5996-01-452-6595
NSN 5930-00-904-0524
NSN 5925-01-209-4948
NSN 6650-01-192-9075
NSN 5930-01-433-7411
NSN 6130-01-580-1281
NSN 5910-00-113-6872
NSN 6610-01-175-0780
NSN 5985-00-121-9844