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 6105-00-639-6857
NSN 5925-01-574-1580
NSN 6220-00-244-2040
NSN 6645-00-650-3405
NSN 5999-00-205-0918
NSN 5990-01-012-0613
NSN 5915-00-678-5300
NSN 5920-00-366-0111
NSN 5930-01-100-1003
NSN 6105-01-343-0099
NSN 5930-00-932-4244
NSN 5990-01-168-6797