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 5998-01-532-0565
NSN 6685-01-196-6378
NSN 2925-00-060-8292
NSN 5905-01-403-2806
NSN 5895-01-468-5582
NSN 5950-00-068-6841
NSN 6320-00-593-0379
NSN 6240-00-079-0112
NSN 5965-00-422-5415
NSN 5905-00-277-7439
NSN 6110-01-633-9660
NSN 5915-00-133-0137