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 6145-01-408-9330
NSN 6220-00-141-6150
NSN 5920-01-145-8188
NSN 6105-01-423-0136
NSN 4140-00-931-9638
NSN 2925-01-569-1549
NSN 6135-01-054-2098
NSN 5965-01-383-7235
NSN 6645-00-077-1805
NSN 5925-01-166-7562
NSN 6620-00-137-0332
NSN 5835-01-281-7281