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 5975-00-121-3589
NSN 2925-01-484-8556
NSN 2925-00-491-3549
NSN 5835-00-853-7785
NSN 6130-00-833-7763
NSN 5975-00-953-0378
NSN 5985-00-106-3585
NSN 5998-00-890-0321
NSN 5930-00-872-6520
NSN 6135-01-297-5565
NSN 5965-01-050-8447
NSN 5950-01-197-8042