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 6620-01-032-3937
NSN 5910-01-630-5595
NSN 5990-01-630-5094
NSN 5945-01-500-5370
NSN 6105-01-445-7182
NSN 6645-00-421-5287
NSN 5925-01-157-9142
NSN 7035-01-403-2841
NSN 5905-01-396-9400
NSN 6220-00-539-8769
NSN 6220-00-291-3722
NSN 5950-01-290-3967