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 5975-01-148-4648
NSN 5960-00-078-9500
NSN 6130-00-346-7833
NSN 6105-01-442-7801
NSN 5996-01-407-7374
NSN 5855-00-150-1820
NSN 6650-01-178-5644
NSN 5999-00-031-4529
NSN 6145-01-590-6063
NSN 5985-01-568-6919
NSN 6220-01-172-3620
NSN 5975-01-627-5714