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 5930-00-369-1645
NSN 5990-01-380-0650
NSN 5985-01-330-7375
NSN 5960-00-170-6916
NSN 6135-00-708-0892
NSN 5910-00-612-0064
NSN 6145-01-035-7527
NSN 5920-00-163-4185
NSN 6105-00-925-9906
NSN 6685-00-862-5131
NSN 5985-01-223-6467
NSN 5975-01-315-0742