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 6610-01-494-1015
NSN 7035-01-026-1171
NSN 5905-00-211-3574
NSN 6145-01-431-8803
NSN 6220-00-959-1195
NSN 5996-01-425-2503
NSN 5910-00-064-2500
NSN 4140-01-578-4112
NSN 6645-01-479-5364
NSN 6105-00-286-5382
NSN 6650-01-290-1029
NSN 6135-00-866-2311