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 6145-01-142-5732
NSN 5855-00-256-5562
NSN 5990-00-902-7764
NSN 6105-00-260-6700
NSN 6135-01-438-4320
NSN 5945-01-153-7624
NSN 6320-01-313-2709
NSN 5835-00-011-6660
NSN 5895-01-170-6715
NSN 6685-00-322-9260
NSN 6650-00-953-0127
NSN 5945-00-411-3690