A Guide to Automotive Sealants

Aug 14, 2025 Updated at Aug 14, 2025

What are Automotive Sealants?

Automotive sealants are specialised materials designed to prevent leakage and contaminant ingress, protect against environmental factors and shock, and maintain structural integrity in vehicles for safety, performance, aesthetics, and longevity.

The automotive industry is constantly evolving and requires innovative solutions which are lightweight and sustainable that improve vehicle design and performance. Miniaturisation has also advanced in automotive electronics so now some components, such as sensors, are too small for mechanical fasteners but still require adhesion.

Types of automotive sealant include threadlockers, flange sealants, liquid gaskets, FIPG and CIPG, tapes, flange sealants, hot melt, and more.

Where are Sealants used in Automotive Applications?

ADAS & LIDAR systems
Cameras and sensors
Cell contacting systems
Coolant system seals
Display and Entertainment Screens
Doors and Windows
ECUs
Electronic Modules
Engine/Powertrain

Flange sealing
Glass and Glazing
Headlamp assembly
Interior Bonding - panelling, finishes, and trims
Underbody protection
Wire connector and Transmission sealing
Potting connectors, switches and relays

Benefits of Automotive Sealants

When choosing the appropriate sealant for your automotive application there are lots of factors to consider such as where it will be used, the temperature range, and what is the primary purpose of the sealant. Different sealants have different key benefits including:

Wide operating temperature range
Flexibility
Chemical and oil resistance
UV stability
Thermal management and heat dissipation
Dielectric properties

Withstand in-line pressure leak testing
Prevent water ingress and leaking of transmission fluids.
Soundproofing
Prevent loosening and leakage from shock and vibration.

Automotive Sealing Products to Consider

TECHSiL supply a wide range of automotive sealants and adhesives including thermal interface materials, low VOC tapes, conductive adhesives, encapsulation and potting compounds, and liquid gaskets. For more information about specific products and their uses in the automotive industry please see below:

Tapes for Automotive

Threebond Engine Sealing Powertrain Products

Automotive Assembly with Hot Melt Adhesive

Adhesives for Cell Contacting Systems

Why Choose TECHSiL for Automotive Sealing?

TECHSiL is an ISO9001 approved organization with exceptional customer service and technical expertise. Whether your interest lies in electronics, powertrain, lighting, chassis, coatings, brakes, seating or interiors, TECHSiL have you covered as trusted automotive adhesive and sealant suppliers. Our advanced materials can be used across the automotive industry including electric vehicles, LIDAR, battery pack assemblies, Motorsports, and autonomous vehicles.

For more information about Automotive Sealants contact our Technical Team today or fill out a contact form.

Categories: Automotive Industrial Sealants