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 5990-01-250-4198
NSN 6130-00-287-6362
NSN 5998-01-422-0624
NSN 5920-01-625-7044
NSN 6685-00-202-3966
NSN 5835-01-382-4592
NSN 6620-01-554-6571
NSN 2925-00-149-0760
NSN 6150-00-516-8445
NSN 6320-00-831-2227
NSN 5965-01-614-7320
NSN 5835-00-216-4568