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 5920-00-079-3972
NSN 6145-00-903-4619
NSN 2925-01-015-2354
NSN 5930-01-598-4558
NSN 5910-01-359-8909
NSN 5935-01-607-7565
NSN 6650-00-207-9639
NSN 6685-01-414-3596
NSN 4140-01-359-5742
NSN 6685-01-076-9671
NSN 6620-00-905-6590
NSN 5910-01-014-0660