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 6135-01-584-0941
NSN 6685-00-260-5628
NSN 6105-01-350-2117
NSN 6645-01-307-4096
NSN 4140-01-435-6198
NSN 5999-00-591-1682
NSN 5965-00-296-9994
NSN 6320-01-512-2031
NSN 5996-01-233-0372
NSN 4140-01-248-7899
NSN 5930-00-008-5221
NSN 5905-01-352-7197