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 6645-00-303-7698
NSN 2925-01-472-4423
NSN 5910-01-184-3403
NSN 7035-01-254-3606
NSN 5965-01-314-2949
NSN 5925-01-350-3646
NSN 5960-01-067-4604
NSN 5945-00-466-2249
NSN 2925-01-446-6523
NSN 5855-00-455-6070
NSN 5910-00-164-6636
NSN 5990-00-518-0684