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 6240-01-342-6367
NSN 6135-01-187-4382
NSN 5910-01-311-7844
NSN 5855-01-042-7990
NSN 6320-00-242-3300
NSN 6685-01-197-3838
NSN 5998-01-555-8489
NSN 5895-01-202-1288
NSN 6135-01-101-5039
NSN 6240-01-317-8783
NSN 6135-01-333-6737
NSN 5960-00-398-1029