Our History

Founded in 1974 by Gene Welter, Seal Methods, Inc. (SMI) is a full-service premier fabricator of gaskets, seals, tapes and precision die cuts. We are one of the most diversified converters in the industry.

Seal methods Inc, privately held and family run, has grown into one of the most diversified materials converters in the country. With multiple facilities around the world, we are a custom converter, manufacturing rotary and flat stamp die cuts, multi-laminations, water-jet, and laser cut materials.

SMI specializes in using materials ranging from sponge or rubber to high-performance elastomers, foams, films, plastics and pressure sensitive adhesives. We work closely with our clients to prototype and manufacture custom applications, whether you need a simple cushion or adhesive tape, or high-performance gaskets, seals, insulators or thermal barriers.

Our Founder

Gene Welter- Was born in Los Angeles, CA in 1938, until moving to Saudi Arabi with the family because his father was a mechanic for the oil industry. After spending two years completing Junior High in Saudi, he went to High School in Rome, Italy at Notre Dame International School for Boys.

After returning to the United States, Gene attended College for a time before entering the full-time work force.

Once Gene was in his thirties, he was working in the Gaskets and Seals Industry. Seeing the potential, he was intrigued with the size of the market available. Gaskets and Seals were everywhere!

While working as Sales Manager for a long-established company, Gene had some exciting and different visions of what “could be”. Eventually, there was a decision that sent Gene home to his wife and baby number one, with no job.

Our Culture

Since our inception in 1974, Seal Methods had one goal: to become the world’s most comprehensive specialty components fabricator and leader in die cut solutions. And that meant strategic growth. We are driven to help our customers success so we started expanding our facilities to meet their needs.

First, we grew our versatile manufacturing capabilities that includes rotary conversion, slitting, sheeting, laminating, CNC knife cutting and molding. We are an ISO & TS 16949 registered manufacturer; customers can be assured that their parts are held to stringent quality standards. In-house testing and inspection capabilities include a range of adhesion and material testing as well as dimensional inspection in accordance with all customer specifications.

Our next part of our strategic growth plan was to add new manufacturing facilities. We expanded into Texas with a 15,000 sq foot facility in San Marcos, Texas that allows us to better support our existing customer base through the region. SMI has a presence in the mid-west, but now we are a stronger player and will be able to grow market share throughout the Mid-West and East.

Our Process

Founded in 1974, Seal Methods, Inc. (SMI) is a full-service premier fabricator of gaskets, tapes, seals and precision die cuts. We are one of the most diversified converters in the industry.

Seal methods Inc, privately held and family run, has grown into one of the most diversified materials converters in the country. With multiple facilities around the world, we are a custom converter, manufacturing rotary and flat stamp die cuts, multi-laminations, water-jet, and laser cut materials.

SMI specializes in using materials ranging from sponge or rubber to high-performance elastomers, foams, films, plastics and pressure sensitive adhesives. We work closely with our clients to prototype and manufacture custom applications, whether you need a simple cushion or adhesive tape, or high-performance gaskets, seals, insulators or thermal barriers.

Supplier Partnerships

We pride ourselves on the high quality of our products, partnering closely with leading material manufacturers including 3M, Rogers, Saint Gobain, Tesa, Dupont, ITW Formex, Bergquist, Nitto Denko, Armacel, Sekisui, Alkegen, and many others.

3M
Armacel
Avery Denison
Bergquist
Dupont
Tesa
Saint Gobain
ITM Formex
Alkegen
Nitto Denko
Rogers
Sekisuai

SANTA FE SPRINGS, CALIFORNIA

HAYWARD, CALIFORNIA

SAN MARCOS, TEXAS

QUERÉTARO, MEXICO

Locations.

With a total of 4 facilities in North America, SMI has grown to 150,000 square feet of manufacturing space to perform for you!
HQ/ Southern California, Northern California, San Marcos Texas, Querétaro Mexico and China.

SMI Videos & Learning.

Blog / SMI News.

Visit our Blog and get the latest news about Seal Methods and the fabrication manufacturing industry. We highlight current trends and how Seal Methods is the premier fabricator on the leading edge in......

Seal Methods looks to the future and celebrating the past 50 years

Happy New Year!  As we reached the end 2023, Darin Welter, President, Seal Methods Inc., sat for an interview to reflect on all the accomplishments of the last year and how he is looking...

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Global Automotive Interior Market Trends

The demand for advanced automotive interior components is expected to grow in line with the increased demand for luxury automobiles as well as for economic cars which are projected to hold the largest market...

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LEARN MORE / DOWNLOAD CERTIFICATIONS

Certifications.

Seal Methods Inc. is an ISO 9001 / IATF 16949 registered company. Our quality assurance department is trained to meet the stringent requirements of ISO certification and more......

Careers.

Seal Methods is one of the most diversified materials converters in the country with multiple facilities around the world. We’re growing and we’re looking for great talent. Whether you’re just launching your career or are an experienced professional, if you’d like to join a team where your innovative thinking, customer-centered attitude, and excitement about contributing are rewarded, we want to hear from you.

APPLICATION PROCESS