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 5998-01-340-7982
NSN 5920-00-005-3263
NSN 5996-01-056-9046
NSN 5905-01-550-8661
NSN 5930-01-376-3248
NSN 6220-01-573-6204
NSN 6135-01-579-3534
NSN 6110-01-359-3171
NSN 5965-00-170-5254
NSN 5925-00-409-9665
NSN 5990-00-466-2952
NSN 6145-01-330-5156