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 5910-01-224-9607
NSN 6610-00-994-4948
NSN 5998-00-436-0666
NSN 5915-00-243-8667
NSN 5996-01-421-9391
NSN 5855-01-466-1588
NSN 6110-01-171-3269
NSN 6130-00-478-6429
NSN 6240-01-312-1871
NSN 6150-00-507-9311
NSN 5990-00-864-6513
NSN 5905-00-205-2595