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 5905-00-998-9230
NSN 6320-01-160-7757
NSN 5945-01-306-3865
NSN 5975-01-065-1740
NSN 6130-00-929-3922
NSN 5990-01-293-4817
NSN 7035-01-553-8618
NSN 5895-00-224-0150
NSN 5975-00-653-4238
NSN 6110-00-932-1590
NSN 6610-01-217-4162
NSN 5998-01-449-1575