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 2925-01-579-1010
NSN 5985-01-276-9422
NSN 5965-00-941-4957
NSN 5960-01-649-1341
NSN 6145-01-484-8735
NSN 5965-01-192-1366
NSN 6135-01-448-9474
NSN 6110-01-089-8130
NSN 6685-01-258-7039
NSN 5915-01-147-6098
NSN 5990-01-351-2379
NSN 6105-01-121-7100