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 5935-01-123-2083
NSN 5965-00-475-2759
NSN 6130-01-439-6046
NSN 6320-01-501-7935
NSN 6220-01-308-8757
NSN 5975-01-381-9064
NSN 5920-01-058-4961
NSN 6610-01-116-2527
NSN 6145-01-243-0123
NSN 6220-00-772-9791
NSN 5960-01-513-3230
NSN 5996-01-600-2856