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 6220-01-259-2430
NSN 5835-00-491-3834
NSN 5905-01-403-2806
NSN 5990-01-365-6016
NSN 6620-00-179-9079
NSN 5975-01-380-0634
NSN 6685-01-572-2452
NSN 5835-01-647-6426
NSN 5895-01-273-5107
NSN 6685-01-500-1810
NSN 5998-01-442-6485
NSN 6685-01-242-3415