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 5915-00-704-1609
NSN 5945-00-707-3384
NSN 5925-01-541-2363
NSN 6685-01-025-6765
NSN 5925-01-412-3406
NSN 7035-00-574-4223
NSN 6610-00-410-0940
NSN 5996-00-344-1250
NSN 5835-00-537-7780
NSN 5910-01-327-6353
NSN 6685-00-516-2173
NSN 6620-00-785-6019