Vacuum Fittings - KF Centering with O-Ring: Complete Guide

Discover the features, technical specifications, and applications of vacuum fittings - KF centering with O-Ring. These fittings provide quick connections and reliable sealing for vacuum and fluid transfer systems.

Product Overview

The KF centering fitting with O-ring is a high-efficiency vacuum and fluid transfer connector. It features a standard KF flange interface paired with an O-ring seal for leak-proof connections. These fittings allow for fast assembly and disassembly, making them ideal for systems requiring frequent maintenance.

Product Structure

KF Flange Body: Made from high-precision metal (e.g., stainless steel) for durability and corrosion resistance.

O-Ring: Typically FKM (Viton) or NBR (Nitrile) rubber, ensuring a tight seal under varying temperatures and pressures.

Key Features

 Quick Connect & Disconnect – KF clamp design for fast installation.
Reliable Sealing – O-ring prevents gas/liquid leaks.
Wide Compatibility – Standard KF sizes (KF10, KF16, KF25, etc.) fit most vacuum systems.
High Durability – Resistant to corrosion, ideal for harsh environments.

Applications

Vacuum Systems: Semiconductor manufacturing, laboratory equipment, vacuum coating.

Fluid Transfer Systems: Chemical processing, pharmaceutical production, food-grade applications.

Technical Specifications

FAQs: Vacuum Fittings - KF Centering with O-Ring

1. What O-ring material is best for KF centering fittings?

FKM (Viton): Best for high temperatures (up to 200°C).

NBR (Nitrile): Suitable for oil and chemical resistance.

2. Can KF centering fittings be reused?

Yes, the KF flange body is reusable, but the O-ring should be replaced periodically to maintain sealing performance.

3. How to properly install KF centering fittings?

Align the tubing, tighten the clamp evenly, and ensure the O-ring is not twisted or over-compressed.

4. What pressure range do KF centering fittings support?

Typically high vacuum to medium pressure (≤1.5 MPa)—check specifications for exact ratings.

5. Are KF fittings compatible with other vacuum flanges?

Only with matching KF sizes; adapters are needed for other flange types (CF, ISO, etc.).

6. How corrosion-resistant are KF centering fittings?

Stainless steel bodies resist most chemicals, but extreme conditions may require special coatings.

7. Why do O-rings fail in KF fittings?

Common causes: Aging, over-compression, or chemical exposure—regular inspection is recommended.

8. Can KF fittings be used in food-grade applications?

Yes, with FDA-compliant O-rings (e.g., silicone).

9. How to troubleshoot leaks in KF fittings?

Check for:

Damaged O-rings

Loose clamps

Contaminated sealing surfaces

10. How should KF centering fittings be stored?

Avoid direct sunlight & high heat

Store O-rings separately to prevent deformation