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 5935-01-180-4203
NSN 5930-00-028-4322
NSN 5910-01-582-1356
NSN 6150-01-533-4888
NSN 5925-00-983-8594
NSN 5930-01-136-7080
NSN 6645-00-244-0359
NSN 6610-00-757-9060
NSN 5895-01-447-2748
NSN 4140-01-256-4597
NSN 6320-01-195-5583
NSN 5990-01-562-4521