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 5950-01-387-0478
NSN 6645-00-334-0115
NSN 6135-00-274-4035
NSN 6320-01-544-6447
NSN 6135-00-455-2425
NSN 5999-01-416-9322
NSN 5895-01-410-8742
NSN 6130-00-604-9462
NSN 5935-00-499-2253
NSN 7035-00-803-3056
NSN 5960-01-570-8605
NSN 6105-01-657-6102