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 6610-01-513-0303
NSN 6150-01-172-2038
NSN 5920-00-159-8582
NSN 5998-01-441-9315
NSN 5915-01-063-8001
NSN 5975-00-110-4089
NSN 5835-01-602-0311
NSN 5960-01-535-1743
NSN 5950-00-884-5452
NSN 6610-00-710-3236
NSN 5910-00-958-0017
NSN 6610-01-088-5871