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 6650-01-157-1667
NSN 6240-01-186-6448
NSN 5910-01-648-7798
NSN 6320-01-136-6842
NSN 5915-00-525-5753
NSN 6645-01-498-5102
NSN 5990-01-013-8464
NSN 5935-01-067-4632
NSN 5985-00-355-2867
NSN 5996-01-347-4211
NSN 5905-01-171-7749
NSN 6685-01-209-6914