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 6150-01-500-2211
NSN 5985-00-474-3492
NSN 5950-01-634-0677
NSN 5895-00-548-5497
NSN 5999-00-332-0351
NSN 5990-00-107-7161
NSN 6645-00-900-5830
NSN 6145-01-350-3532
NSN 5930-01-265-6888
NSN 5975-01-290-9387
NSN 6650-00-248-0647
NSN 5855-01-327-2681