True Seals is a state-of-the-art ISO-9001:2015 Certified custom gasket manufacturing company. We are the only company in the region capable of manufacturing sheet material from bulk buns. We boast the region’s largest inventory of commercial grade gasket, foam and stripping materials in the greater Spokane and surrounding areas.

True Seals specializes in servicing high and low volume OEM’s, sub-assembly fabricators, prototype design firms and repair/service shops.


Our team brings over 100 years of combined manufacturing experience, 45 years of which was earned by specifically working within the custom gasket manufacturing industry. With this high level of expertise, True Seals has the knowledge and experience for manufacturing a vast array of products – all to the exact performance and design specifications required.


True Seals has the right equipment for the job! Our in-house manufacturing processes include:

  • CNC Die Cut Gaskets
  • CNC Knife Cutting
  • Laminating & Skiving
  • Slitting of Bulk Materials (Raw Buns & Rolls of Material)
  • Thermal Forming
  • Pure-Water Waterjet Cutting

If your product requires equipment not available in your area, True Seals is interested in learning how we can
assist – either by suggesting alternate manufacturing methods or by purchasing manufacturing equipment to
service your needs.