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 6130-01-176-3445
NSN 6320-01-033-6624
NSN 5996-01-080-0301
NSN 6105-00-300-0732
NSN 5996-01-188-7548
NSN 6685-01-267-1861
NSN 5990-01-307-4489
NSN 4140-00-434-5001
NSN 5945-00-451-7476
NSN 4140-01-020-9926
NSN 5960-00-443-1483
NSN 5910-01-551-1473