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 6130-01-412-8662
NSN 5985-01-292-9158
NSN 5835-01-595-4099
NSN 6110-00-762-9128
NSN 5895-01-440-9847
NSN 5950-01-004-9326
NSN 5935-01-111-4721
NSN 6620-01-208-1092
NSN 5990-00-362-1453
NSN 5985-00-851-9780
NSN 6685-01-634-0611
NSN 6685-01-254-3490