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 5855-01-105-7793
NSN 5975-01-020-7131
NSN 6320-01-554-0901
NSN 6135-01-544-8463
NSN 5910-01-155-2404
NSN 5975-01-529-6358
NSN 5985-01-027-9122
NSN 6620-01-212-8089
NSN 6685-01-226-8645
NSN 7035-01-486-4118
NSN 5930-01-068-3641
NSN 5855-00-149-0766