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 5960-01-215-0992
NSN 5965-00-924-7605
NSN 5930-01-270-4051
NSN 5855-01-455-1491
NSN 5905-01-563-4394
NSN 6105-01-552-8968
NSN 5935-01-172-6520
NSN 5925-00-529-0441
NSN 6105-01-296-3778
NSN 5945-01-544-8982
NSN 6150-00-112-0478
NSN 5935-00-062-4719