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 6320-00-456-2092
NSN 5985-01-359-3356
NSN 6105-00-075-2487
NSN 6610-01-173-6323
NSN 5996-00-209-9517
NSN 5905-00-233-6407
NSN 6610-00-578-6790
NSN 7035-01-538-1210
NSN 6610-01-352-5500
NSN 5895-00-246-4415
NSN 6145-00-259-6946
NSN 5935-00-088-2533