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 6110-01-415-3542
NSN 6240-01-417-2976
NSN 5975-01-109-6099
NSN 5965-01-020-4104
NSN 5999-00-581-7139
NSN 6110-01-659-8232
NSN 5965-01-156-7013
NSN 6145-00-232-0813
NSN 5895-00-477-7823
NSN 5945-01-354-1450
NSN 6685-01-046-2531
NSN 5996-01-658-6926