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 6130-01-517-9550
NSN 5990-01-108-7785
NSN 6610-00-277-7206
NSN 5975-01-630-6886
NSN 6150-00-567-1650
NSN 6220-00-491-8929
NSN 2925-00-866-7311
NSN 5990-01-231-9608
NSN 6320-01-078-8257
NSN 6110-01-007-1204
NSN 6135-01-246-0308
NSN 2925-01-230-8057