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 5960-01-230-2806
NSN 5975-00-925-4586
NSN 6220-01-495-1037
NSN 5910-01-644-4177
NSN 5998-01-470-6314
NSN 6135-01-245-5876
NSN 5905-01-177-6327
NSN 2925-01-532-2477
NSN 5999-00-822-9497
NSN 5999-00-399-1215
NSN 6130-01-623-1748
NSN 6620-00-591-4029