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 6685-00-654-9912
NSN 5990-01-540-1619
NSN 6130-01-653-7141
NSN 5935-01-383-7573
NSN 5930-00-277-4704
NSN 5925-01-562-0259
NSN 6110-01-084-6013
NSN 2925-01-426-3410
NSN 6150-00-073-3007
NSN 5925-00-786-8123
NSN 6645-00-426-3719
NSN 5996-00-004-4699