High Tech Metal Seals

HTMS, short for High Tech Metal Seals, is a privately owned company, founded in 1999 by a group of sealing specialists. For more than 20 years we have been designing, developing and manufacturing elastic or resilient metal sealing solutions for the most demanding applications in numerous markets.

A passionate and determined team that has built tremendous design and production expertise throughout the years makes HTMS one of the global leaders in the metal sealing industry.

Driven by operational excellence and the common goal to find and deliver the best possible solution on the market is what makes HTMS the preferred partner for our customers. Together we develop metal sealing solutions of the highest quality standard meeting customer specifications.

  • Metal O-Seal
  • Spring Energised Metal O-Seal
  • Metal C-Seal
  • Spring Energised Metal C-Seal
  • Spring Energised Aluminum C-Seal
  • Metal Oysterseal®
  • Metal Commaseal®

HTMS’ resilient metal seals are used in a wide variety of applications where normal seals cannot cope with extremes of temperature, pressure, medium or combinations thereof.

HTMS - High Tech Metal Seals


HTMS specialises in metallic seals, serving all markets including aerospace, nuclear, oil & gas (both subsea and topside), automotive, industrial, medical…


HTMS is dedicated to produce resilient metal seals under the most stringent quality procedures. The company is ISO 9001, AS 9100 and ISO 14001 certified.


  • 100% LP test on O Ring seal welds
  • X-ray of weld area on request
  • Fully integrated Helium leak test facility
  • Hydrostatic pressure testing up to 90 MPa
  • Seating load and spring back measurement equipment
  • XRF on plating layers
  • CNC optical measurement for in-line and end control


  • More than 100 years of experience
  • In-house testing
  • R&D for new products
  • Close cooperation with universities
  • Development of new production methods and new sealing solutions