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 4140-00-888-7026
NSN 6150-00-225-7080
NSN 6220-01-366-6747
NSN 5996-01-446-0568
NSN 5960-01-231-9119
NSN 6650-01-193-8983
NSN 5905-01-065-1663
NSN 2925-01-500-0730
NSN 6105-00-020-3591
NSN 5930-01-116-2944
NSN 5950-01-535-7276
NSN 5965-01-414-3753