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 5835-01-508-2528
NSN 5910-01-516-1428
NSN 5990-01-142-0538
NSN 5950-01-641-8722
NSN 5999-01-230-0511
NSN 4140-01-325-4742
NSN 5975-00-951-5938
NSN 5915-01-501-5222
NSN 6320-01-134-7267
NSN 5925-01-172-9820
NSN 6150-01-642-3746
NSN 5910-01-142-4248