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 5925-00-986-8980
NSN 5920-01-096-1864
NSN 6220-01-644-1362
NSN 6105-01-371-5861
NSN 6240-00-223-5058
NSN 6685-01-460-5031
NSN 5996-00-084-1790
NSN 6610-00-511-6201
NSN 6145-00-170-9415
NSN 6320-01-165-8932
NSN 6220-01-583-6116
NSN 5895-01-235-4167