SECO SEALS, an ISO 9001: 2015 and AS9100D certified gasket manufacturer, is a world leader in specialty manufacturing of high pressure tube fitting gaskets including our industry standard SECO737 Degree Flared Tube Fitting Conical Seals” product line. SECO SEALS puts an end to leaks in most environments affordably and dependably. Our CAGE (Commercial and Government Entity) Code is 33447 and the ECCN (Export Control Classification Number) is 9A991.d.

Our Goal

Our goal is the elimination and prevention of leaks caused by the mechanical failure of connections between fittings for fluids and gases in any environment. 

Why Use our Products

SECO SEALS’ flare gaskets allow the unlimited use of fittings by replacing the gasket after each use.  The SECO flare gasket is used to protect the surface of the fitting and the flare tube. These soft annealed crush washers improve performance of the connection by custom forming into the slight imperfections of the fitting or flare surface finish.

The Problem

Repetitive opening and closing of connections for liquids and gases provide a path for leaks on sealing surfaces.  These repetitive actions may eventually require the replacement of the fittings which increase both labor and material costs.

The Solution

Annealing is a heat treatment process that changes the physical and sometimes also the chemical properties of a material to increase ductility and reduce the hardness to make it more workable (malleable). Ductility is the ability of a solid material to stretch under tensile stress, i.e. when a metal is stretched into a wire.

Annealing copper or any other metal involves heating it to a specific temperature and allowing it to cool at a specified rate. This process removes impurities in the grain, increases the metal’s ductility, and reduces its hardness ( softer, more malleable).

Our Services

As an ISO 9001:2015 and AS9100D certified gasket manufacturer, you are guaranteed the highest quality and reliability.  But certification is only the beginning.  We believe our customer service is equal to our superior quality and reliability.  No matter the application, you can rely on our products to meet your demanding needs.  For over 50 years, SECO SEALS, Inc. is all you need to know for your gasket applications.

In our effort to remain on the leading edge of our industry, we expanded our capabilities for “build to print” sealing solutions for extreme pressure and temperature applications made of the highest quality metal foils between 0.005″ and 0.015″.

Make SECO SEALS Your Choice For Gasket Applications

Target Environments

SECO SEALS developed gasket sealing solutions that are used in:


Spacecraft Launch
Rocket Engine Closeup
Rocket Engines
Jet Engine Maintenance


Truck Hydrogen Fuel Cell
Plugging Methane Leak
Refueling with Natural Gas


Heat Pump Installation
Air Conditioning Repair
HVAC Commercial Building

Marine Environments

Off Shore Oil and Gas Rig
Diving Pressure Chamber
Deep Sea Survey ROV
Gas Bottle Tap

Other areas we target are Geological Services and the Automotive Industry (Race Cars).

Product Lines

We offer the following industry standard product lines.

SECO7 – 37 Degree Flare Gaskets

SECO7 products are designed to be reliable, flight grade components made in accordance with AS4824, a National Aerospace Standard.

SECO45 Flare Gaskets

SECO SEALS is introducing its newest product line, SECO45 – Patent Pending, 45 degree flare gaskets.

SECO11 – 24 Degree Flareless Gaskets

SECO11 products are designed to be reliable, flight grade components made in accordance with AS4825, a National Aerospace Standard.

SECO77 Kits

We provide pre-assembled SECO77 Kits with a wide assortment of our SECO7 37 Degree Flare Tube Gaskets along with kits customized to your needs.  For more information about these kits,  videos are available in French, Italian, German, Brazilian Portuguese, Japanese, Mandarin, Arabic or Spanish.

Installation and Maintenance Aids

Our SECO7 installation demonstration video demonstrates how easy it is to correctly install our SECO7 “37 Degree Flared Tube Fitting Conical Seals” product line. Installation demonstration videos are available in English, French, Italian, German, Brazilian Portuguese, Japanese, Mandarin, Arabic or Spanish.

Call or Fax for Information

Phone: 714.546.3478
Fax: 714.546.3106


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