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 6110-01-426-6924
NSN 6130-01-169-7749
NSN 6685-00-837-3963
NSN 5835-00-034-4976
NSN 6320-00-925-0558
NSN 5910-01-133-9467
NSN 5915-00-398-0677
NSN 5895-01-242-3446
NSN 5990-01-411-5930
NSN 5975-01-300-4071
NSN 6135-01-443-5279
NSN 7035-01-421-7159