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 6220-01-659-1370
NSN 5990-00-060-7009
NSN 5950-00-263-2061
NSN 6220-01-158-6556
NSN 5895-01-056-4548
NSN 5915-01-603-7557
NSN 6130-01-142-6931
NSN 5895-01-570-8306
NSN 6135-01-238-2878
NSN 5990-00-532-2641
NSN 5935-01-211-5763
NSN 6620-01-583-6490