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 5950-01-624-8591
NSN 5999-01-560-1537
NSN 5990-01-218-5160
NSN 4140-00-833-6239
NSN 6610-01-414-7481
NSN 6105-00-936-5025
NSN 6150-01-422-2755
NSN 6645-00-708-8569
NSN 5945-00-831-9130
NSN 5998-01-413-5890
NSN 5930-00-926-3103
NSN 5905-01-399-8656