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 6685-01-608-5137
NSN 5985-00-795-8350
NSN 5950-01-628-2547
NSN 5965-01-207-0991
NSN 6610-01-484-8980
NSN 6610-01-508-6272
NSN 5930-01-188-2892
NSN 5910-00-360-2334
NSN 6650-00-981-9501
NSN 2925-00-453-4100
NSN 5935-01-468-0608
NSN 5835-01-158-6878