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 5990-01-066-5227
NSN 6240-00-824-0924
NSN 6110-01-031-7185
NSN 5935-00-044-2435
NSN 6320-00-223-0498
NSN 5915-01-064-5721
NSN 6145-01-296-5580
NSN 5950-01-335-0677
NSN 2925-00-555-8836
NSN 5835-00-917-7344
NSN 6135-01-512-8740
NSN 7035-01-198-1512