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 5905-01-631-6918
NSN 6110-01-427-9277
NSN 5975-01-048-0474
NSN 5990-01-145-2878
NSN 5925-00-318-0026
NSN 6135-00-246-0324
NSN 5985-00-281-0810
NSN 5985-00-793-9856
NSN 5965-01-528-8152
NSN 5930-01-360-0425
NSN 6610-01-204-9146
NSN 5960-01-577-5682