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 5915-01-157-8407
NSN 5930-01-500-7410
NSN 5965-00-499-8229
NSN 6130-00-839-3219
NSN 5975-01-237-5769
NSN 5965-01-323-7225
NSN 6145-01-302-2043
NSN 5975-01-458-0312
NSN 5999-01-490-1779
NSN 5975-01-173-0332
NSN 5935-00-314-2063
NSN 5999-00-908-4118