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 5925-01-451-5140
NSN 6620-01-132-5190
NSN 6240-00-169-6408
NSN 5920-00-276-8657
NSN 6130-01-018-4159
NSN 6110-00-976-3361
NSN 5960-01-346-3377
NSN 6645-01-069-3286
NSN 6135-01-568-9107
NSN 5990-00-136-0991
NSN 2925-00-005-1618
NSN 5990-00-964-5296