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 6130-01-099-9295
NSN 5960-01-311-2170
NSN 6610-01-009-3263
NSN 6135-01-512-8740
NSN 6135-01-222-0703
NSN 2925-00-246-3077
NSN 2925-01-233-8545
NSN 5910-01-586-4457
NSN 5855-01-035-2866
NSN 5996-01-142-0878
NSN 6620-00-100-4517
NSN 5998-01-642-5700