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 5920-01-456-2803
NSN 5905-00-910-9486
NSN 6130-01-214-0366
NSN 6610-01-204-9146
NSN 5965-01-141-6485
NSN 5945-00-200-2311
NSN 5920-01-514-5190
NSN 7035-00-849-5526
NSN 5999-00-740-8259
NSN 5985-01-089-2627
NSN 5935-00-415-4043
NSN 5855-01-409-1792