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 5960-01-487-6436
NSN 6145-01-141-7250
NSN 5910-01-200-1668
NSN 6105-00-099-8818
NSN 5855-01-040-3881
NSN 6135-01-622-1296
NSN 5998-00-598-0480
NSN 4140-00-719-5654
NSN 5996-01-311-0640
NSN 6620-01-462-0001
NSN 6620-00-994-4917
NSN 5965-01-408-9551