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 5998-01-201-7397
NSN 6145-01-377-8470
NSN 5855-01-359-5727
NSN 5990-00-263-1289
NSN 6135-01-610-2098
NSN 6610-01-338-5338
NSN 5985-01-214-8406
NSN 5910-01-447-2417
NSN 5920-01-094-7284
NSN 5965-00-615-7118
NSN 5930-01-314-6426
NSN 5985-00-181-8848