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 2925-01-386-7392
NSN 4140-01-457-7727
NSN 6685-01-355-1120
NSN 5905-00-880-2285
NSN 6650-01-464-8885
NSN 6220-01-222-9554
NSN 6320-01-078-8257
NSN 5935-01-146-7723
NSN 6645-00-935-7046
NSN 5990-01-370-7912
NSN 5925-00-045-8091
NSN 5835-01-030-2519