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 6240-01-335-7727
NSN 6105-01-361-3270
NSN 6610-00-618-6192
NSN 6110-00-967-2071
NSN 5925-01-388-3325
NSN 6645-01-386-4588
NSN 5950-00-831-1748
NSN 5998-01-276-3720
NSN 5925-01-602-8068
NSN 6685-00-943-2270
NSN 5935-00-540-9557
NSN 5835-00-080-8213