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 5910-00-246-3561
NSN 5999-00-678-7190
NSN 5835-00-221-6628
NSN 6220-01-161-8199
NSN 6650-01-468-6889
NSN 5996-00-107-5357
NSN 6610-00-587-3260
NSN 6645-00-171-9639
NSN 5965-00-069-8886
NSN 5975-00-830-7638
NSN 5950-01-384-3315
NSN 5905-00-020-3832