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 5925-01-452-1704
NSN 6240-00-573-7514
NSN 5996-00-060-7309
NSN 6130-01-292-5818
NSN 5925-01-314-7384
NSN 6240-00-326-2966
NSN 5915-01-433-2128
NSN 6685-01-334-6091
NSN 6645-01-142-1707
NSN 5965-01-119-1898
NSN 5990-01-294-6198
NSN 5835-01-176-5422