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 5925-00-909-3688
NSN 5990-01-101-5097
NSN 6150-00-121-8602
NSN 5990-00-191-6290
NSN 6220-00-686-5328
NSN 5965-01-222-1420
NSN 6105-00-752-2069
NSN 5965-00-992-8942
NSN 6145-00-468-8534
NSN 5975-01-585-3829
NSN 5996-01-472-2858
NSN 5985-01-493-8689