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 4140-00-152-7092
NSN 5930-00-108-5377
NSN 6240-00-043-5259
NSN 5910-01-157-9687
NSN 6685-01-076-4703
NSN 5965-01-005-0341
NSN 6110-01-407-4693
NSN 7035-00-205-1932
NSN 5905-01-327-4634
NSN 6130-01-268-3323
NSN 6150-01-605-2017
NSN 5935-01-383-1397