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 5990-01-097-4329
NSN 5925-01-631-2226
NSN 5985-01-289-0941
NSN 5835-00-518-2740
NSN 5855-01-172-4568
NSN 5960-01-589-6846
NSN 5960-01-256-6956
NSN 6135-00-563-7711
NSN 5910-01-233-9350
NSN 5999-01-025-1404
NSN 5920-01-377-5803
NSN 2925-01-289-6448