Shimadzu, 206-77620-91, O-ring Set AA-7000 (Standard)

The Shimadzu AA-7000 standard O-ring set provides replacement seals for the flame atomizer spray-chamber assembly of the AA-7000 atomic absorption spectrophotometer. The standard seal material is fluorine-containing rubber, distinct from optional perfluoroelastomer and silicone O-ring versions. Seals help maintain correct spray-chamber integrity and secure gas and liquid flow paths during flame AAS operation. Worn, swollen or damaged O-rings can create leaks or affect atomization stability, so inspect the chamber seals during scheduled maintenance. Shut down the flame and gases, allow the assembly to cool and follow the instrument's service procedure before replacement. Select seal material for the actual sample and solvent exposure; standard fluororubber seals are not a universal solution for aggressive organic solvents. Reassemble the chamber carefully, check the required seals and connections, and complete the prescribed leak and operating checks before returning the spectrophotometer to service.