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 6650-00-465-7654
NSN 5996-01-377-3743
NSN 6105-01-198-1462
NSN 5925-01-248-4779
NSN 5895-00-227-4752
NSN 7035-01-652-2814
NSN 5915-01-259-4373
NSN 6145-01-426-2931
NSN 7035-01-441-9509
NSN 6220-01-005-4322
NSN 6685-01-465-3129
NSN 4140-01-049-1375