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 6685-01-452-2368
NSN 5935-01-122-2550
NSN 5945-00-057-3007
NSN 5965-01-500-1840
NSN 6220-01-281-0349
NSN 6150-00-067-5244
NSN 5985-01-298-7399
NSN 6110-00-538-1313
NSN 6685-01-040-7710
NSN 5965-00-387-6880
NSN 6240-01-471-1634
NSN 5855-01-441-0401