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 5905-01-522-5709
NSN 4140-00-826-9031
NSN 5935-00-492-2385
NSN 6135-00-203-9645
NSN 5950-01-513-9668
NSN 5925-00-232-3256
NSN 5925-01-230-7475
NSN 5895-01-513-8991
NSN 5999-00-197-4034
NSN 5999-01-407-7479
NSN 5835-01-085-5487
NSN 6150-00-979-8546