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 5910-01-139-1424
NSN 5996-01-411-7705
NSN 5998-01-332-0859
NSN 5910-01-076-6117
NSN 5996-00-914-6298
NSN 5985-01-041-3330
NSN 5935-01-167-7790
NSN 5960-00-393-2505
NSN 5950-00-563-5066
NSN 6135-01-320-4815
NSN 5930-00-366-7046
NSN 5998-00-061-7583