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 5915-01-543-7031
NSN 6610-00-105-9663
NSN 5910-00-030-9966
NSN 5985-00-529-0093
NSN 4140-01-551-3589
NSN 6685-01-614-4116
NSN 5960-01-491-2993
NSN 2925-00-203-8735
NSN 6685-01-042-3166
NSN 6685-01-213-3183
NSN 5985-00-923-8383
NSN 6105-00-156-4312