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 6685-00-501-6501
NSN 6110-00-259-8114
NSN 6620-01-207-0667
NSN 5920-01-252-8660
NSN 5935-01-369-6964
NSN 5930-01-169-2651
NSN 5905-01-124-2426
NSN 6145-01-501-6548
NSN 6240-00-807-2508
NSN 5895-00-553-8345
NSN 5930-00-546-9728
NSN 5930-01-075-5013