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 6135-01-346-0851
NSN 5925-01-459-1005
NSN 6135-01-368-0453
NSN 5930-01-634-0659
NSN 5895-01-620-0894
NSN 5990-01-065-0492
NSN 5950-00-854-3085
NSN 5915-01-432-0324
NSN 5996-01-562-2370
NSN 6240-00-079-0112
NSN 6685-01-340-0784
NSN 4140-01-607-0488