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 5930-00-907-3623
NSN 5855-01-174-2463
NSN 5905-00-987-1541
NSN 6105-00-811-0629
NSN 5855-01-020-7982
NSN 5855-01-583-6496
NSN 5960-01-084-4335
NSN 5965-00-702-7257
NSN 5925-00-051-2003
NSN 6145-01-144-5728
NSN 6685-01-443-3284
NSN 6240-01-580-8751