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 6110-01-245-2405
NSN 6150-01-444-3980
NSN 5985-01-114-0483
NSN 5990-00-082-3107
NSN 7035-00-140-0474
NSN 6220-01-425-2631
NSN 6130-00-004-1239
NSN 6240-01-464-5903
NSN 5999-00-892-8094
NSN 5965-01-142-8044
NSN 6145-00-635-9957
NSN 4140-00-419-0631