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 5990-01-465-9235
NSN 5990-01-524-8954
NSN 6150-01-330-6166
NSN 6110-01-421-5880
NSN 5905-01-209-6737
NSN 5998-01-167-6956
NSN 6105-01-586-6244
NSN 6610-01-245-8015
NSN 6320-00-468-8421
NSN 5945-01-069-2506
NSN 2925-00-928-5931
NSN 5925-01-114-1848