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 5855-01-642-5649
NSN 5990-00-081-5370
NSN 5999-00-999-2807
NSN 6610-01-244-3416
NSN 6150-01-233-1113
NSN 5905-01-623-7010
NSN 5998-00-554-9725
NSN 5895-00-494-0168
NSN 5998-00-905-7385
NSN 5960-01-265-0354
NSN 6650-01-431-5438
NSN 6610-01-211-6182