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 5985-00-503-9829
NSN 5999-01-360-1530
NSN 4140-01-041-8896
NSN 4140-01-534-9987
NSN 5965-01-222-1420
NSN 5975-00-830-7638
NSN 5925-01-364-0771
NSN 6645-00-419-9939
NSN 5935-01-095-2008
NSN 5855-01-170-8957
NSN 5950-00-061-1463
NSN 2925-00-081-3547