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 2925-00-017-0526
NSN 5950-01-109-3809
NSN 4140-01-196-5232
NSN 5960-00-948-0032
NSN 6240-00-248-6517
NSN 6130-00-541-8468
NSN 6320-01-224-0063
NSN 6645-00-200-2322
NSN 5960-01-331-1076
NSN 6145-01-085-6249
NSN 6240-00-548-3992
NSN 6610-01-105-9520