Surface Treatment:
Surface Oxidized
Chrome-faced
lramenting
Surface Nitriding
Surf ace Porcelainized
Surface Nami Spraying
face Composite Plating
Product type
S Type Back-up Ring S
H Type Back-up RingH
Screw Type Back-up Ring
Key Stone,
Half Key Stone
Material Characteristics: Dductile Cast Iron, Cast iron, Steel
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