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 6135-01-612-4148
NSN 6150-00-615-5886
NSN 5950-01-519-5832
NSN 5905-01-246-4501
NSN 5895-01-077-0107
NSN 6130-00-350-8019
NSN 6150-01-313-4149
NSN 5990-00-952-0696
NSN 5998-01-160-7710
NSN 5950-01-328-6292
NSN 6135-00-170-8819
NSN 6105-01-479-0060