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 5935-01-147-5432
NSN 5965-00-617-2497
NSN 5945-01-089-9800
NSN 6220-00-951-6900
NSN 5945-00-419-2600
NSN 5996-01-069-5027
NSN 5950-01-508-6812
NSN 5950-01-529-6542
NSN 6150-01-322-7666
NSN 6645-00-767-6307
NSN 6150-01-494-9272
NSN 6150-01-497-6163