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 5990-01-516-9665
NSN 5925-01-476-3879
NSN 5935-01-573-6824
NSN 6105-01-536-4066
NSN 5935-01-044-1288
NSN 5996-01-333-2329
NSN 6105-01-557-1219
NSN 5945-00-001-9721
NSN 6145-00-493-4073
NSN 6685-00-227-0212
NSN 6135-01-654-6147
NSN 5960-01-272-0285