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 5855-00-233-2366
NSN 6145-01-433-5511
NSN 6685-01-358-4130
NSN 6220-01-384-9131
NSN 5915-00-845-7278
NSN 5905-01-315-6322
NSN 6240-01-224-7656
NSN 5960-01-438-0245
NSN 6110-01-374-6640
NSN 7035-01-071-0197
NSN 5998-00-103-7127
NSN 5915-00-259-3772