ISO-K bored flange DN250ISO, bore size 273,8mm, stainless steel 316L

🔧 ISO-K Welding Flanges – Precision Fit for Vacuum Systems

Our ISO-K Welding Flanges are machined to ISO 1609 standards and designed for seamless integration into vacuum systems using claw clamps. These flanges feature a precisely bored center that matches standard piping diameters and inch tubing, ensuring a perfect fit every time.

Also known as Welding Flange ISO-K, they’re ideal for permanent, high-integrity connections in demanding environments.

📐 Specifications at a Glance:

• Dimensions: DN63 to DN320
• Materials: Aluminum, Stainless Steel 304 & 316L
• Pressure Ratings:
  • Elastomer Seal: >1 × 10⁻⁷ mBar to 1.5 bar
  • Metal Seal: >1 × 10⁻⁹ mBar to 1.5 bar
• Temperature Range:
  • Viton: –20 °C to +200 °C
  • Buna: –30 °C to +110 °C
  • Metal Seal: –270 °C to +150 °C

✅ Why Choose ISO-K Welding Flanges?

• Perfect for custom vacuum assemblies
• Compatible with European ISO NW systems
• Built for durability, precision, and leak-tight performance