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 6645-01-385-7033
NSN 5975-01-289-7093
NSN 5998-01-142-5513
NSN 6110-01-255-1712
NSN 6130-00-080-0506
NSN 6620-01-463-1373
NSN 5965-00-602-1508
NSN 5895-00-098-7634
NSN 5990-01-334-8634
NSN 5855-01-473-6076
NSN 6645-01-473-9179
NSN 2925-01-035-7699