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The JB PR-12 O-Ring is designed for use with specific JB manufacturer model numbers including DV-127, DV-142, DV-3, DV-5, DV-85, and DV-85C. This O-ring serves as a replacement component for the gas ballast in the trap of compatible vacuum pumps. It ensures proper sealing and function within the specified equipment.
Replacement O-ring for JB vacuum pump gas ballast.
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