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 2925-00-413-2064
NSN 5945-01-407-3716
NSN 2925-01-400-2286
NSN 6105-00-627-5876
NSN 6685-00-642-0533
NSN 6650-01-176-6143
NSN 5855-01-304-3064
NSN 5935-01-045-9708
NSN 5965-00-318-6482
NSN 4140-01-341-3310
NSN 6135-01-177-3552
NSN 6150-01-265-1142