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 6610-01-246-4164
NSN 5999-01-431-8878
NSN 6145-01-579-1855
NSN 5990-00-539-7859
NSN 5999-01-480-0855
NSN 6320-00-681-1324
NSN 5945-01-410-7778
NSN 5930-01-273-9304
NSN 5920-01-377-1410
NSN 5895-01-142-3749
NSN 5835-00-897-3123
NSN 5990-00-484-3189