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 6620-01-408-4464
NSN 4140-00-635-9195
NSN 5915-01-038-6809
NSN 5960-00-139-2603
NSN 5905-00-723-2006
NSN 5945-01-415-0858
NSN 6130-00-923-3383
NSN 5960-01-202-6610
NSN 5950-01-133-7347
NSN 6620-01-448-1423
NSN 6130-00-039-8534
NSN 6620-00-394-1812