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 5895-01-370-3160
NSN 6135-01-413-4747
NSN 6105-01-022-4695
NSN 5950-01-065-0788
NSN 6685-01-634-0611
NSN 6610-01-018-9122
NSN 5990-01-147-5225
NSN 4140-00-225-8586
NSN 5925-01-658-1253
NSN 5990-01-408-6554
NSN 6320-00-377-5683
NSN 5990-01-188-7309