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 6610-01-408-9557
NSN 6620-01-567-0289
NSN 5915-01-512-8851
NSN 5895-00-247-7394
NSN 7035-01-556-9060
NSN 6145-00-156-4394
NSN 5945-01-495-6564
NSN 5935-00-762-0312
NSN 6145-00-403-6495
NSN 5915-00-186-9346
NSN 5905-01-273-5450
NSN 5895-01-357-8044