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 6650-01-625-0018
NSN 5965-01-554-1271
NSN 7035-01-594-3695
NSN 5925-00-459-0827
NSN 5960-00-522-5231
NSN 6685-01-155-4808
NSN 5990-01-328-9846
NSN 6150-01-246-0319
NSN 5835-01-257-5342
NSN 5990-01-179-5625
NSN 5925-01-328-2053
NSN 6220-01-152-2637