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 2925-01-649-7543
NSN 6105-01-170-2638
NSN 6110-00-393-1212
NSN 6320-01-123-6814
NSN 6650-01-347-6785
NSN 6645-01-425-1673
NSN 6110-01-175-7735
NSN 5925-00-918-3023
NSN 5835-00-373-2671
NSN 5915-00-816-9056
NSN 7035-01-391-2531
NSN 5920-01-373-9405