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 5930-01-212-9907
NSN 2925-01-391-1540
NSN 5965-01-245-6585
NSN 5915-01-431-4478
NSN 5925-01-505-9954
NSN 5930-01-349-3469
NSN 5985-01-571-4617
NSN 5998-00-053-9891
NSN 7035-01-487-4038
NSN 5985-00-776-7876
NSN 6645-01-431-0386
NSN 5996-01-156-5947