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 6150-01-456-4448
NSN 5985-00-682-9190
NSN 5990-00-404-9567
NSN 5905-00-132-5494
NSN 6105-00-675-0525
NSN 5950-01-442-3535
NSN 5945-01-592-1531
NSN 5975-01-394-5281
NSN 5905-01-003-0867
NSN 5999-00-655-0006
NSN 6105-00-338-7682
NSN 5990-00-932-3070