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 6645-01-546-8226
NSN 6645-00-701-4606
NSN 5910-01-647-7247
NSN 6220-00-146-3226
NSN 5915-01-157-6207
NSN 5835-01-632-6627
NSN 7035-01-172-6772
NSN 6220-01-037-7852
NSN 6220-01-107-2613
NSN 5925-01-415-6551
NSN 5975-01-091-0124
NSN 6130-00-402-8545