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 5935-01-026-0251
NSN 6320-01-227-2648
NSN 6110-01-029-3403
NSN 6240-01-659-3149
NSN 7035-01-064-6048
NSN 6610-01-596-6852
NSN 6685-01-567-4721
NSN 5960-01-147-3287
NSN 6620-01-346-9340
NSN 5996-01-032-4815
NSN 5990-00-944-3568
NSN 6110-01-379-3984