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USA Lab KF25 Ball Valve
USA LabKF25-BV$72.99Our USA Lab KF25 vacuum ball valve is a KF25 High Vacuum Flange to adapt to any other KF25 pump or manifold if needed and is made out of 304 stainless steel with a PTFE seat and seals. -
USA Lab KF25 to PTFE Adapter
USA Lab$35.00The USA Lab PTFE adapter is designed connect glassware and fit it to a KF25 connector for vacuum. Vacuum leaks are no lon -
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USA LAB KF25 90 Degrees
USA LabKF2590$25.00These KF-25 90 degree elbow vacuum fittings follow ISO-KF standards and have a flange size of NW-25.
Description
KF Vacuum Flange End Cap – 304 Stainless Steel | KF16, KF25, KF40, KF50 | USA Lab
Our USA Lab KF flange end cap is machined from premium 304 stainless steel to securely cap unused ISO-KF (NW/QF) ports. Pair with the correct KF centering ring with O-ring and wing-nut clamp for a clean, leak-minimized seal during vacuum operation or system maintenance.
Available sizes: KF16, KF25, KF40, and KF50. Durable, corrosion-resistant, and reusable for laboratories, pilot systems, and process skids.
Designed for quick installation and tool-less service, these blanks help isolate lines, protect pumps/instruments, and keep manifolds contamination-free.
304 Stainless Steel ISO-KF (NW/QF) KF16–KF50 Reusable Vacuum Blank
Clean, Secure Seal: Caps unused KF ports when used with a centering ring and clamp.
304 SS Construction: Corrosion-resistant, durable, and easy to sanitize.
Fast Turnaround: Drop-in ISO-KF fit for KF16, KF25, KF40, KF50 — quick, tool-less install.
Why buy from USA Lab
Expert Support
Engineers & technicians on staff.
Engineers & technicians on staff.
Quality First
Tested and trusted products.
Tested and trusted products.
Fast Fulfillment
Nationwide 1-2 day shipping.
Nationwide 1-2 day shipping.
Warranty & Parts
US-based service & spares.
US-based service & spares.
Resources & Downloads
Why this KF end cap?
- ISO-KF compliant — Fits standard NW/QF hardware for straightforward integration.
- Protects your system — Prevents contamination and moisture ingress on idle ports.
- Built to last — 304 stainless steel for everyday lab and light industrial service.
- Multiple sizes — Stocked in KF16, KF25, KF40, KF50 to match your manifold.
- Easy maintenance — Smooth machined surfaces clean quickly between uses.
Talk to an expert
Get help selecting the correct KF size, centering ring, and clamp.
Technical Specifications
| Model | USA Lab KF Vacuum Flange End Cap – 304 Stainless Steel |
|---|---|
| Available Sizes | KF16, KF25, KF40, KF50 (ISO-KF/NW/QF) |
| Material | 304 Stainless Steel (SS304) |
| Connection Interface | ISO-KF vacuum flange; use with matching centering ring (O-ring) & clamp |
| Finish | Precision machined; smooth, cleanable surface |
| Reusability | Reusable; inspect sealing surfaces before reuse |
| Typical Applications | Blanking unused ports, isolating lines, pump/instrument protection |
| Compatibility | KF components, vacuum manifolds, traps, pumps, gauges (size-matched) |
| What’s Included | One KF stainless-steel end cap (centering ring and clamp sold separately) |
Popular Industries & Use Cases
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Documentation & Compliance
Keep purchasing streamlined and compliant.
Custom Solutions
Tailored tanks, skids, and integration help.
Talk to Sales
We’ll help spec the right system for your throughput.
FAQ
What sizes are available for the USA Lab KF Vacuum Flange End Cap – 304 Stainless Steel?
The USA Lab KF Vacuum Flange End Cap – 304 Stainless Steel is offered in KF16, KF25, KF40, and KF50 to match standard ISO-KF hardware.
What do I need to seal the USA Lab KF Vacuum Flange End Cap – 304 Stainless Steel?
Use a size-matched KF centering ring with O-ring and a KF clamp. The USA Lab KF Vacuum Flange End Cap – 304 Stainless Steel installs quickly without tools.
Is the USA Lab KF Vacuum Flange End Cap – 304 Stainless Steel reusable?
Yes. The USA Lab KF Vacuum Flange End Cap – 304 Stainless Steel is reusable. Inspect sealing faces and O-rings before each use.
What material is the USA Lab KF Vacuum Flange End Cap – 304 Stainless Steel made from?
It is manufactured from SS304 for corrosion resistance, durability, and easy cleaning.
Important Shipping Notice!
DISCLAIMER:
All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.
Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.
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