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 5998-01-418-1589
NSN 6145-01-558-3249
NSN 5835-00-289-9080
NSN 5950-01-075-5292
NSN 6685-01-217-9309
NSN 6240-00-761-7655
NSN 2925-00-233-5644
NSN 5998-00-814-8394
NSN 5999-00-900-4778
NSN 5999-01-442-3529
NSN 5855-01-334-6594
NSN 6240-01-367-1925