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Get to Know 3 Seals

3 Seals is your one stop silicone rubber supplier, made in the USA. We have designed a unique seal, never seen before.


Our Heavy Duty lifetime seals have 3 different sides. Each with different dimensions, giving you numerous options to close a gap.

Our team of dedicated specialist aim to provide the best in customer service and support.

We work hard to insure that our silicone seals are top notch.

Heavy Duty Seal 


Prevents Floods, Leaks, Cold Air, Heavy Winds, Smoke and more. 

You will find that our seals are great, indoors usages for the interiors of homes and apartments. As well as for the exterior of homes and apartments.

Why Silicone Rubber?

Silicone rubber is one of the most commonly used synthetic rubbers on the market. It is composed of silicone bonded with hydrogen, carbon, and oxygen to create cross-linked polymers reinforced with silica. The result is a unique synthetic elastomer that offers the ideal balance of mechanical and chemical characteristics for the most demanding applications.

Silicone rubber offers distinct advantages over other elastomers, including:

  • Environmental resistance: Silicone rubber exhibits a high level of resistance to harsh environmental factors, including UV radiation, open flames, extreme temperatures, and corrosive chemicals.

  • Thermal stability: Silicone rubber will retain its shape, durability, and flexibility in extreme hot and cold temperatures.

  • Moisture Sealant: Silicone rubber is water repellent and malleable, which makes it an excellent sealant.

  • Easy sterilization: Silicone rubber can withstand high temperatures, harsh chemicals, and radiation exposure required with FDA-regulated sterilization methods, making it a useful medical-grade material.

  • Color friendly: Silicone rubber is easy to color prior to the curing process so that it exhibits a lasting, vivid shade.

  • Electrical properties: Silicone rubber is an excellent electrical insulator, however, the addition of metal or carbon black can improve its conductive properties.

  • Range of hardness: Silicone rubber can be formulated to exhibit different ranges of flexibility and hardness, depending on the needs of the application.

  • Durable and reliable: Silicone is highly durable and retains its shape and flexibility in extreme conditions, making it a particularly reliable material for use in critical applications.

  • With its ability to conform to the needs of nearly any application, it is no surprise that silicone rubber is one of the most widely used materials.

Properties of Silicone Rubber

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