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 5905-01-246-4849
NSN 5935-01-468-3037
NSN 5855-01-420-4988
NSN 5996-00-319-1820
NSN 6685-01-543-6131
NSN 5950-00-804-8165
NSN 5996-00-229-7037
NSN 5960-01-473-9203
NSN 5975-00-214-9117
NSN 5905-01-112-3099
NSN 5965-01-511-8504
NSN 6145-01-007-1742