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 6130-01-243-0983
NSN 5920-01-389-8258
NSN 6220-01-225-4096
NSN 5985-01-344-3663
NSN 5905-01-112-7195
NSN 5895-00-805-9179
NSN 5998-00-240-6447
NSN 6145-01-502-6399
NSN 5915-00-504-2926
NSN 5835-00-930-8500
NSN 6685-01-249-3248
NSN 6650-00-078-5773