About Sealing Devices

For nearly 60 years Sealing Devices has been a proud manufacturer, fabricator, and distributor of O-Rings, gaskets, EMI shielding and thermal interface materials, custom molded rubber parts, protective vents, tapes, adhesives, and sealants for all types of sealing applications. 

We have over 200 pieces of state-of-the-art manufacturing equipment, and specialize in quick-turn jobs for prototype through production quantities. Our capabilities include: fabrication, die-cutting, waterjet and laser cutting, slitting, laminating, form-in-place gasket dispensing, injection, compression and transfer molding, and specialized packaging and barcoding.  

Sealing Devices has been a manufacturing supplier to the Transportation, Aerospace, Military, Electronics, Communications, General Industrial, Fluid Power industries.  We’re an authorized distributor for Parker, Gore, 3M, Rogers, Loctite, and many other world leading sealing materials manufacturers. 

Sealing Devices has been in business under private family ownership since 1963, and is currently led by second-generation leader, Terry Galanis, Jr., with it’s headquarters located in Lancaster, NY, and additional offices in Erie, PA, Colorado Springs, CO, Melbourne, FL, Rochester and Syracuse, NY. We are a veteran-owned, small business and ITAR registered with quality management systems certified to AS9100D and ISO 9001:2015 standard.