Click to enlargeISO63 to 4.50" OD Conflat
Straight Reducer

ISO63 to 4-1/2" OD Conflat
Flange to Flange Adapter

Vacuum Essential
• Tube OD: 2.50"
• A: 4.33"
• B: 2.37"
• Straight Reducing Nipple
• OD Polish
• 304 Stainless

ISO63 (ISO-K) Series
• High Vacuum Flange OD: Ø3.74"
• ISO-K Claw Clamp Style

ISO63 High Vacuum Flange Equivalents:
ISO-63, LF63, NW63, NW-63, Large Flange, MF

4-1/2" OD Conflat Flange (CF):
• 8-Clearance (Thru) Holes
• 0.332" Bolt Hole Diameter
• Non-Rotatable

4.50" OD Conflat Flange (CFF) Equivalents
• 450CF, DN63CF, NW63CF, CF63, CF64 CF450

ISO63 to 4.50" OD Conflat
Straight Reducer


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Click to enlarge
ISO63 Series Hardware

4.50" OD Conflat Series Hardware

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Custom Adapters and Nipples

ISO x Conflat Adapters

**This Vacuum Essential Includes**
• Straight Reducer: ISO63x450
4-Aluminum Double Claw Clamps (ISO63-100-DC)
1-Stainless/Viton Centering Ring (ISO63-250-SR-V)

1-Bolt Kit (450-BK Series)
10-Copper Gaskets (450-CG Series)

Contact LDS Vacuum with any questions:
Phone (407)862-4643 via Fax (407)862-8723 or

LDS Vacuum Products is a 100% woman owned company and
certified Woman Owned Small Business (WOSB)
The logos and/or trademarks appearing on this page are not owned by or registered to LDS but, rather, designate products sold by LDS, and are owned and/or registered to the manufacturers or suppliers of the products.
Viton® is a registered trademark of DuPont Dow Elastomers
Images Shown May Be For Reference Only