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 5945-01-229-9197
NSN 5999-01-138-9771
NSN 6685-01-293-2769
NSN 5960-01-108-2984
NSN 5990-01-066-5227
NSN 6645-01-420-2417
NSN 5975-00-102-4022
NSN 5920-00-973-8366
NSN 5985-01-166-7422
NSN 5996-00-629-2894
NSN 6685-01-593-4511
NSN 5950-00-481-8513