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 5990-00-825-0273
NSN 5905-01-632-3053
NSN 5950-00-862-6687
NSN 6130-01-400-6123
NSN 5990-01-117-7932
NSN 5835-00-356-3825
NSN 5985-01-214-6230
NSN 5965-01-628-7205
NSN 6110-00-801-2483
NSN 5965-01-207-7026
NSN 6145-01-317-2686
NSN 6110-01-007-6111