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 5935-01-282-8976
NSN 6645-01-653-7762
NSN 5965-00-636-4926
NSN 5975-00-573-7479
NSN 2925-01-036-8251
NSN 5996-00-250-6556
NSN 6145-01-203-5015
NSN 5905-01-150-4509
NSN 5950-01-380-4658
NSN 5935-01-406-5077
NSN 5835-00-192-9568
NSN 5925-01-192-5181