x
x
x
x
  0  
Key High Logo

Introduction to O-ring Socket Weld Flanges

Many of these flanges were the first-generation high-vacuum flanges developed for the commercial market. Two flanges of the same diameter (one with oring) are bolted together to create a leak-tight connection.

Easy Installation

The advantage of Socket Weld Flanges is their ease of installation. Connecting a tube to a socket weld flange is simple. The tube end is inserted into the flange’s socket. Once aligned, a fillet weld is performed around the ID, creating the connection. This straightforward process saves time, making O-ring Socket Weld Flanges a popular choice for many applications.

O-ring Socket Weld Flanges effectively connect tubes and take up less space than weld neck flanges. We offer a variety of sizes, types, and specifications to best suit your application


Product information is subject to change without notice. Product images may include options or accessories not included with the base model.


Precision Welded. Performance Proven.
For 50 years, Key High Vacuum Products, Inc. has been a trusted leader in precision-engineered stainless steel high vacuum weldments. With tens of thousands of unique weldments in use—from particle accelerators to industrial leak detectors—our expertise is proven across industries. Rooted in innovation, craftsmanship, and an unwavering commitment to customer satisfaction, we deliver high-quality, customized solutions that drive success. Every day, our team brings a unique blend of passion and precision, ensuring your goals are met with excellence—because your mission matters. Experience the Key High difference.
Key High Logo
Key High Vacuum Products, Inc.
36 Southern Boulevard, Nesconset, NY 11767
1-631-360-3970
© 2025 Key High Vacuum Products, Inc.