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 6240-01-433-1403
NSN 5905-01-049-2153
NSN 6150-00-707-8804
NSN 5965-00-182-7928
NSN 5965-01-573-5863
NSN 5935-00-398-1584
NSN 2925-00-234-0479
NSN 6320-00-004-9158
NSN 5998-00-111-1122
NSN 5975-01-542-8788
NSN 6145-00-669-6795
NSN 5950-01-025-5543