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 5935-00-055-2445
NSN 5950-01-305-5602
NSN 6650-01-381-7296
NSN 5999-01-068-1786
NSN 5925-00-014-6541
NSN 6105-01-010-3512
NSN 5895-01-272-9740
NSN 5935-00-845-9594
NSN 5996-00-959-2326
NSN 6105-00-664-1292
NSN 2925-01-479-3806
NSN 5935-01-519-2522