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 2925-00-936-4333
NSN 5925-01-656-4950
NSN 5905-00-269-4831
NSN 5910-01-293-2395
NSN 5855-01-658-4510
NSN 6240-00-951-6643
NSN 6145-01-365-0645
NSN 5855-01-383-6860
NSN 5835-00-498-1551
NSN 6110-01-502-5617
NSN 5915-00-155-1425
NSN 7035-01-302-3914