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 5920-01-464-3863
NSN 5895-01-541-2349
NSN 5945-00-057-3007
NSN 5835-01-632-6627
NSN 6685-01-425-8788
NSN 5925-00-990-8818
NSN 6220-01-491-7226
NSN 5960-01-209-6917
NSN 5975-00-820-1581
NSN 5935-01-244-0555
NSN 5985-01-519-3138
NSN 6610-01-010-4516