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 5975-01-252-3611
NSN 6685-00-038-7886
NSN 6610-01-395-4918
NSN 6610-01-250-2811
NSN 5910-01-139-5085
NSN 5905-00-050-1458
NSN 6110-00-420-6518
NSN 5965-01-492-4728
NSN 5996-01-364-1074
NSN 5835-01-572-1284
NSN 6620-01-371-1655
NSN 6320-01-445-5893