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 6110-00-690-8565
NSN 6645-01-654-5293
NSN 5998-00-235-7483
NSN 6685-01-363-7796
NSN 5920-01-415-5020
NSN 5996-01-058-1533
NSN 5915-01-352-5871
NSN 6320-01-180-9908
NSN 5905-01-252-9097
NSN 6130-00-394-3421
NSN 5925-00-643-9404
NSN 5930-01-445-1429