- Overview
- Products
- 3M™ VHB™ Tapes
- 3M™ Scotch-Weld™ Structural Adhesives
- Adhesive Transfer Tapes and Double Coated Tapes
- Spray Adhesives
- Reclosable Fasteners
- Foam Tapes
- Hot Melt Adhesives
- View All Products
- Applications
- Panel-to-Frame/Stiffener-to-Panel
- Small Joint Assembly
- Large Surface Lamination
- Mounting and Trim Attachment
- Gasket Attachment
- Sealing/Potting and Encapsulating
- View All Applications
- Design Challenges
- Resources
- Automated Manufacturing
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- Bonding Process Center
- Bonding Product Selector
- Learn About Bonding and Joining
- Science of Adhesion
- Structural Adhesives Resources
- View All Resources
- Support
Sealing, Potting and Encapsulating
3M Sealing, Potting and Encapsulating solutions for ultimate protection.
Reliable protection for your designs
Seals are required along the length of a seam. Potting and encapsulating encases the entire part or chamber to protect the components inside. Both prevent fluid ingress or egress and are found throughout industry, but are especially common in applications exposed to the elements or with high-value internal components, including transportation, metalworking, electronics and construction.
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Sealing
Tape or sealant is applied over a seam to prevent fluid ingress or fluid egress. Examples include roof seams on vehicles, seams on metal enclosures and pipe sealing.
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Potting and Encapsulating
Adhesive flows over and around a component or fills in a chamber to protect components therein. Examples include heavy duty electrical cords and connectors, electronics in plastic cases, circuit boards and concrete repair.
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A seal must be highly elongating and flexible, durable, and fast setting. By definition, mechanical fasteners almost always require a secondary seal because penetrations in a surface allow fluid and vapor to freely flow into an assembly.
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- Flexibility
- Ease of application
- Time to paint (or handle part)
- Immediate rework
Peel, Compression and Tension Stresses when Sealing, Potting or Encapsulating
If the assembly requires two overlaps or butt joints to be sealed, the sealant is often exposed to peel forces. Foot traffic over doorway thresholds or wind on a railcar roof continually attempt to peel a sealant, whether tape or adhesive, off the part. If the application is potted or encapsulated, the adhesive (tapes are not a good fit here) often sees compression and tension as the part experiences thermal expansion or contraction. Many potted parts, on circuit boards for example, can see all three stresses – peel, compression and tension.
Protect your design with 3M products
After all the time you put into making the perfect product, make sure it’s protected against vibration, moisture and other contaminants with reliable 3M products. 3M tapes, sealants and adhesives permanently seal gaps and seams without sagging, pot or encapsulate sensitive components and cure quickly for painting.
Performance Factors for Sealing, Potting, and Encapsulating
The 3M technologies shown below are commonly used in sealing or potting and encapsulating applications. Use these lists as a relative comparison of product performance.
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+ = Good ++ = Better +++ = Best
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+ = Good ++ = Better +++ = Best
Need help finding the right product for your project? Contact us if you need product, technical or application advice or want to collaborate with a 3M technical specialist, or give us a call at 1-800-831-0658.
Need help finding the right product for your project? Contact us if you need product, technical or application advice or want to collaborate with a 3M technical specialist, or give us a call at 1-800-831-0658.
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