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 5950-01-416-6707
NSN 5990-00-275-7819
NSN 5990-01-459-5482
NSN 5910-00-205-2430
NSN 5965-01-415-2898
NSN 5965-01-063-7894
NSN 5996-00-670-5203
NSN 6145-00-060-2818
NSN 6220-01-197-7680
NSN 6130-00-540-5305
NSN 6220-01-353-9026
NSN 6320-00-908-6841