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 5975-01-460-9823
NSN 5996-00-071-5946
NSN 4140-00-446-1024
NSN 6650-01-511-8276
NSN 5915-00-027-7665
NSN 5996-01-645-4831
NSN 5960-00-269-3726
NSN 6240-00-488-0278
NSN 2925-01-115-0306
NSN 5965-01-176-6470
NSN 6685-01-530-0685
NSN 5965-01-506-5558