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 5975-01-246-8806
NSN 5935-00-584-4584
NSN 6320-01-630-7629
NSN 6610-00-026-4389
NSN 5895-00-857-0774
NSN 6105-00-940-9829
NSN 6620-01-485-0556
NSN 5999-01-243-9840
NSN 5910-01-121-1176
NSN 6110-01-274-2507
NSN 5990-01-066-5227
NSN 6645-00-813-2235