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 6685-01-054-0308
NSN 5996-01-515-5770
NSN 6220-01-197-8865
NSN 5965-00-434-7617
NSN 5945-01-134-0466
NSN 6650-01-338-6042
NSN 5950-01-353-5850
NSN 5925-00-485-2851
NSN 5996-00-379-8785
NSN 5920-00-467-9274
NSN 5915-01-133-5077
NSN 6645-01-296-4223