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 6105-01-174-0899
NSN 5999-01-535-6822
NSN 6110-01-427-0161
NSN 6145-00-505-7555
NSN 6150-01-207-0443
NSN 5996-01-172-9400
NSN 6130-00-510-4399
NSN 4140-01-374-1498
NSN 6620-01-117-5545
NSN 6145-00-575-7190
NSN 5999-00-676-8452
NSN 6110-01-140-4937