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 5999-00-008-2537
NSN 5975-00-949-1729
NSN 5960-01-227-9642
NSN 6620-01-215-0470
NSN 5925-01-250-3925
NSN 6130-00-221-7679
NSN 6105-01-535-2291
NSN 6135-01-025-8109
NSN 5925-01-258-2129
NSN 5998-01-245-9491
NSN 5855-01-641-8826
NSN 5996-00-777-0173