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 6110-00-106-2057
NSN 5930-00-780-1016
NSN 6685-01-367-6620
NSN 5915-01-242-1203
NSN 6645-00-900-5830
NSN 5998-00-148-9718
NSN 5915-00-325-9375
NSN 5910-01-556-4278
NSN 5999-00-949-0265
NSN 5945-00-942-7813
NSN 5835-01-370-8912
NSN 5990-00-057-2795