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 5950-01-431-8103
NSN 7035-01-328-7448
NSN 6110-00-029-9116
NSN 2925-01-156-4335
NSN 4140-00-146-1633
NSN 5895-01-512-8605
NSN 6105-01-250-5139
NSN 6150-00-531-6440
NSN 6110-01-127-9134
NSN 7035-01-183-7550
NSN 5905-01-529-6604
NSN 6650-01-486-3964