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 6650-00-246-3751
NSN 5996-01-367-1410
NSN 5999-00-686-7623
NSN 6145-01-135-4930
NSN 5905-01-060-1139
NSN 5925-01-321-9406
NSN 5835-01-457-7951
NSN 6110-01-446-3282
NSN 5950-00-797-7832
NSN 5930-00-980-1984
NSN 5950-00-225-8849
NSN 6620-00-111-0401