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 5960-01-173-2338
NSN 5990-01-227-6526
NSN 6145-00-185-9962
NSN 2925-01-513-9114
NSN 5985-01-096-3161
NSN 6130-00-346-7833
NSN 5905-01-254-4349
NSN 6685-00-227-6750
NSN 6240-01-633-9357
NSN 5950-01-176-8252
NSN 5996-01-064-6138
NSN 6135-01-218-3660