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 5998-01-111-1635
NSN 5996-01-384-7431
NSN 4140-00-894-1048
NSN 5905-00-701-3498
NSN 6685-01-534-8216
NSN 5910-01-268-2250
NSN 6650-01-030-5545
NSN 6130-01-449-0782
NSN 6645-01-408-6568
NSN 5998-01-029-9842
NSN 5950-00-284-1009
NSN 5915-01-310-3528