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 5905-01-362-1434
NSN 6650-00-675-1370
NSN 6685-01-078-1759
NSN 2925-00-456-7627
NSN 5925-01-515-8951
NSN 5910-00-052-0498
NSN 6105-00-518-1854
NSN 5975-01-012-3538
NSN 5925-01-193-0171
NSN 5990-01-369-6915
NSN 6620-01-345-4835
NSN 5895-00-168-1590