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 5945-01-532-0418
NSN 6685-00-509-2380
NSN 5925-01-567-1580
NSN 5975-00-484-2223
NSN 6105-01-415-8078
NSN 5915-01-364-2936
NSN 5945-00-082-7563
NSN 5945-01-144-5054
NSN 5950-00-248-6921
NSN 5895-01-371-3351
NSN 5905-00-050-3885
NSN 6220-01-038-0418