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 5910-01-371-3110
NSN 5925-01-188-7630
NSN 6320-00-456-2092
NSN 6150-01-390-4882
NSN 5999-01-295-8586
NSN 5930-00-925-1891
NSN 5935-01-313-9802
NSN 6105-00-647-3955
NSN 6135-01-199-1185
NSN 5910-01-418-8015
NSN 7035-01-563-7103
NSN 6610-01-010-4516