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 6105-01-458-8428
NSN 5990-00-935-5610
NSN 6620-00-416-4131
NSN 5855-00-821-7512
NSN 5895-01-432-0991
NSN 5990-01-241-2479
NSN 6610-01-436-2803
NSN 5960-00-188-8648
NSN 5975-01-286-0554
NSN 5965-00-362-2158
NSN 6685-00-248-6972
NSN 5998-00-193-5038