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 2925-01-182-9924
NSN 5975-00-899-0463
NSN 7035-01-498-2510
NSN 5935-00-057-6165
NSN 5999-00-116-7528
NSN 5855-00-401-3442
NSN 5920-01-362-8814
NSN 5915-01-200-8283
NSN 6130-01-310-8441
NSN 5925-00-981-2341
NSN 5835-01-632-6627
NSN 5920-01-593-2489