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 6650-00-736-8456
NSN 5915-01-023-6936
NSN 5915-01-632-0539
NSN 5925-01-477-6200
NSN 7035-01-332-3496
NSN 6130-01-571-9663
NSN 5925-00-167-0592
NSN 6135-00-191-6444
NSN 5945-00-484-9693
NSN 5985-01-424-5932
NSN 5990-01-414-2778
NSN 6620-00-590-9257