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 2925-01-617-6302
NSN 5950-01-338-2048
NSN 5998-01-193-4233
NSN 5999-01-348-8871
NSN 6620-01-232-8552
NSN 5950-01-499-1085
NSN 5905-01-441-2213
NSN 6105-01-623-3590
NSN 5835-01-426-0069
NSN 5965-01-065-5544
NSN 5996-01-322-4838
NSN 5920-01-148-7625