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 5920-01-481-2546
NSN 5975-01-512-0705
NSN 5950-01-344-4432
NSN 5965-00-144-2543
NSN 6240-01-354-2626
NSN 5960-01-500-6615
NSN 5905-01-557-1836
NSN 6110-01-385-5650
NSN 5975-01-601-9296
NSN 6220-00-119-1507
NSN 5975-01-448-9738
NSN 6135-01-164-3561