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 5996-01-608-0121
NSN 5905-01-093-6914
NSN 5975-01-341-0629
NSN 5930-01-472-7811
NSN 6650-01-452-5379
NSN 5950-00-781-4693
NSN 6620-00-872-5032
NSN 6145-01-423-8625
NSN 6145-00-951-9971
NSN 6240-01-425-8815
NSN 2925-00-706-5902
NSN 5835-00-787-8122