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 6220-01-453-0548
NSN 5925-00-505-4083
NSN 5895-01-624-8566
NSN 5905-00-262-0942
NSN 5950-01-525-8631
NSN 6620-00-767-9415
NSN 6645-00-218-6354
NSN 5945-01-482-0578
NSN 5935-00-337-0445
NSN 5990-01-374-3877
NSN 2925-01-342-1712
NSN 5915-00-108-4941