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 6620-00-951-0153
NSN 6645-01-148-3613
NSN 4140-00-473-8189
NSN 6685-01-365-0933
NSN 5945-01-115-8859
NSN 5996-00-644-0205
NSN 5985-01-089-9895
NSN 5920-00-539-6920
NSN 5950-01-016-3718
NSN 6110-00-672-2863
NSN 6650-00-312-1200
NSN 5915-01-622-3588