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 5925-00-205-2767
NSN 6610-01-168-7943
NSN 5960-01-031-0347
NSN 5945-01-441-8545
NSN 5895-01-634-0630
NSN 6110-00-999-3130
NSN 5990-01-598-3251
NSN 5910-01-534-2027
NSN 5915-00-101-2782
NSN 6135-01-360-1620
NSN 5905-01-595-1144
NSN 2925-00-211-4761