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 5905-00-452-0740
NSN 5985-01-145-5337
NSN 6150-01-368-1810
NSN 5855-01-213-9076
NSN 5835-01-357-9235
NSN 5920-01-225-8860
NSN 5950-01-434-7626
NSN 5895-01-581-1335
NSN 6610-01-406-6696
NSN 5905-01-600-0179
NSN 5945-01-105-9326
NSN 5985-01-653-5541