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 6610-00-476-4402
NSN 6645-01-249-8435
NSN 4140-01-648-2175
NSN 4140-00-833-6239
NSN 6320-01-207-9038
NSN 5905-01-276-1118
NSN 5905-00-479-3998
NSN 5915-00-949-5405
NSN 5925-01-407-2542
NSN 5950-00-206-3213
NSN 6145-01-118-6442
NSN 6150-01-545-6897