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GRINDING AND LAPPING
To assure that pitted or scarred hard seal rings will stay within tolerance,
they are
first diamond ground on our ultra precision horizontal grinder. Seal
rings are then measured and inspected again to print. Aluminum oxide
and diamond lapping
on large platens provide polished flatness
to within two helium bands.
SEAL ASSEMBLY/FINAL INSPECTION
During final assembly all pressed inserts
are vacuum tested to confirm leak free sealing. Seal rings are again
checked on
our optical flat to be within tolerance. All cartridge seals are completely
pressure tested before they are packaged and labeled according to your
instructions.
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