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 5920-01-139-1221
NSN 6130-01-633-9442
NSN 5895-01-183-8114
NSN 5835-01-125-0303
NSN 6105-01-465-3463
NSN 7035-00-275-5604
NSN 5990-01-321-2997
NSN 5945-01-121-3088
NSN 5895-01-036-4430
NSN 5835-01-254-8584
NSN 5925-01-209-5566
NSN 5960-01-142-1995