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 5945-00-225-9530
NSN 5935-00-800-9992
NSN 6645-01-400-1137
NSN 5998-00-714-5899
NSN 5925-00-410-7560
NSN 5855-00-106-1640
NSN 6650-01-578-5519
NSN 5905-01-428-9660
NSN 6685-01-227-6785
NSN 5965-01-368-2966
NSN 5835-00-659-9547
NSN 5925-01-032-1827