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 4140-01-558-6831
NSN 5915-01-364-4713
NSN 6145-01-490-2920
NSN 2925-01-467-7672
NSN 5905-00-858-6664
NSN 5910-01-059-1113
NSN 6145-01-649-9619
NSN 6685-01-495-6594
NSN 7035-01-353-4048
NSN 5915-01-444-4946
NSN 5925-00-724-9811
NSN 6130-00-866-3469