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 6145-00-468-8534
NSN 6220-01-154-8368
NSN 5835-01-391-4556
NSN 5930-01-563-3966
NSN 5985-01-054-4700
NSN 6145-00-643-4962
NSN 5910-01-130-3896
NSN 6320-01-072-2073
NSN 5975-01-393-7463
NSN 5895-01-483-1177
NSN 6130-01-604-1429
NSN 5910-00-236-7584