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 6320-01-170-4068
NSN 5905-00-434-6788
NSN 6105-01-217-6638
NSN 5945-01-571-6997
NSN 2925-01-643-7870
NSN 5945-00-276-9274
NSN 5910-01-500-4594
NSN 6320-00-336-9123
NSN 5990-01-321-2997
NSN 6220-01-054-9112
NSN 6620-00-280-2874
NSN 5905-01-246-6708