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 5935-00-107-7315
NSN 5999-01-634-0576
NSN 5960-01-337-8951
NSN 5990-00-105-7831
NSN 6650-00-573-7131
NSN 6220-00-136-7749
NSN 5996-01-455-5823
NSN 5925-00-290-4451
NSN 5945-01-390-5679
NSN 5935-01-453-8399
NSN 5965-01-202-1007
NSN 6620-01-004-7072