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A0629-1-W | UV Grade Sapphire Viewport, 0.59″ View Dia, 0.66″ Dia Kovar Weld Adapter
A0813-1-QF | UV Grade Sapphire Viewport, 0.59″ View Dia, 1.18″ QF / KF Flange
A0808-1-CF | UV Grade Sapphire Viewport, 0.59″ View Dia, 1.33″ Conflat Flange