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 6320-00-164-4087
NSN 6150-01-204-0040
NSN 6320-00-456-0836
NSN 5905-01-107-7123
NSN 6110-01-447-2770
NSN 5910-01-598-9403
NSN 4140-01-495-1466
NSN 5915-00-027-2757
NSN 2925-01-231-6312
NSN 6320-01-046-5228
NSN 6685-00-902-6773
NSN 6650-01-093-1803