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 5895-00-009-5698
NSN 5925-01-389-3085
NSN 5930-00-518-1642
NSN 5935-01-123-9865
NSN 6320-00-070-4544
NSN 5999-00-560-4436
NSN 6685-00-186-9190
NSN 2925-00-441-8252
NSN 5950-01-069-2229
NSN 6610-01-120-7670
NSN 5998-01-089-8180
NSN 5998-00-816-9752