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 5895-01-416-6243
NSN 5990-00-147-3144
NSN 5855-01-143-7051
NSN 6240-01-063-7685
NSN 5985-00-584-3795
NSN 5855-01-023-3727
NSN 5930-00-111-8643
NSN 5945-00-628-7494
NSN 5945-01-620-0083
NSN 5930-01-382-9798
NSN 6105-00-394-6803
NSN 6650-01-569-0004