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 5925-01-618-2646
NSN 5990-01-486-2556
NSN 6320-00-139-1090
NSN 5965-00-685-8899
NSN 6135-01-651-3210
NSN 5895-00-221-6557
NSN 6240-01-332-4554
NSN 6320-01-276-4739
NSN 6110-01-188-8017
NSN 5985-01-623-7886
NSN 5925-01-647-1651
NSN 6320-01-648-5538