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 5950-01-481-4173
NSN 5990-01-089-6743
NSN 5990-00-288-1820
NSN 5925-01-176-3153
NSN 5998-01-227-8835
NSN 5975-01-605-2468
NSN 6645-01-411-5657
NSN 5999-01-426-0779
NSN 6685-01-368-1534
NSN 2925-00-048-7172
NSN 5945-01-048-1469
NSN 5965-01-468-8405