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 5998-01-087-9954
NSN 6130-00-172-5896
NSN 5998-00-603-9400
NSN 6320-00-456-2092
NSN 6620-01-241-9592
NSN 6150-01-141-6604
NSN 5895-01-023-0522
NSN 6145-01-598-9912
NSN 5925-01-152-1931
NSN 5905-01-487-6048
NSN 5835-01-085-5487
NSN 5930-01-205-2121