3M Heavy-Bodied Seam Sealer, 08308, 200 ml cartridge, 6 per case

• FAST CURE TIME: Ideal for high-speed results, this sealant fully cures in just 1 hour
• HIGH-PERFORMANCE: Two-part epoxy seals vertical and horizontal seams to match OEM seals
• METERED MIXING: Dual syringe cartridge eliminates the difficulty and mess of manual mixing
• NON-FLOWING: Heavy-bodied formula allows easy tooling for matching OEM seam sealer appearances
• SELF-MIXES: Makes a perfect formulation every time without mess

The 3M Heavy-Bodied Seam Sealer is a two-part epoxy seam sealer for all general purpose automotive sealing. It cures quickly to a tough, strong bead for lasting seam sealing protection and is used on door skins, floor pans, trunk floors, roof seams, and many other applications. The self-mixing system ensures a proper mix ratio every time - delivering a consistent cure rate and strength.

Eliminate Mess and Downtime
Mixing sealer components by hand often results in a big mess and waste of materials and time. Our high-performance 3M™ Heavy-Bodied Seam Sealer operates with a two-part cartridge and nozzle that self-mixes with a perfect formulation every time and without the mess. This efficient system helps reduce application waste, improves efficiency, and remains ready for job after job with no downtime for mixing mistakes.

Match OEM Appearances
This professional-quality black seam sealer can be used to seal vertical or horizontal seams on automotive surfaces primed with a 2K urethane, 2K epoxy primer, or clean, sanded paint. Its non-flowing, heavy-bodied formula allows technicians to texturize the seam to match OEM seam sealer appearances and duplicate OEM beads.

Durable, Fast-Cure Formula Creates a High Quality Seal
Our flexible formula works within a wide range of temperatures with no shrinking or cracking to achieve strong, durable construction. It offers a fast setup time of 6 minutes, decreasing downtime and allowing technicians to continue repair procedures quicker, increasing productivity. Moreover, the fast-cure formula means there is a limited time of uncured product on the car and the risk of damaging the seam by disturbing uncured seam sealer is greatly reduced. This enables technicians to quickly achieve a long-lasting, high quality seam seal.

Using the Seam Sealer Effectively
Our 3M™ Heavy-Bodied Seam Sealer for DMS (PN 58308) comes in a kit that includes a 600 mL cartridge, two “purple” mixing nozzles (PN 55847, also available in boxes) and an extension tube for attaching an OEM tip to the mixing nozzle. The 600 mL cartridges fit into our 3M™ Dynamic Mixing Applicator – Pneumatic (PN 05846). 

3M™ Heavy-Bodied Seam Sealer in 200 mL cartridges (PN 08308) can be used with the following 3M™ Applicators: PN 08117 (manual), PN 08571 (manual), and PN 09930 (pneumatic) Also use the 3M™ Mix Nozzle: PN 08193 (6/bag), PN 8194 (50/box).  

For either product, choose from 3M™ OEM Seam Sealer Tips PNs 08201, 08202, 08203, 08204, or 08205.

About DMS, a Self-Mixing System
Our 3M™ Dynamic Mixing System (DMS) increases job productivity while ensuring the body repair quality you’ve come to expect from 3M.  With the Dynamic Mixing System, you dispense fillers, glazes, adhesives, sealers and plastic repair products when and where you want them, at the touch of a trigger. There is no messy mixing process, no wasted materials, and no lost time cleaning up. By utilizing the correct amount of product and reducing consumption, you save both materials and time. 

3M Science Meets the Needs of Automotive Professionals
3M used science to create a sealer that combines toughness with flexibility. 3M™ Heavy-Bodied Seam Sealer is ideal for lasting seam sealing protection on many different surfaces, and allows technicians to expertly recreate OEM seam sealer appearances. This formula, along with the self-mixing 3M™ Dynamic Mixing System, represents another way that 3M applies science to improve working conditions and productivity in the automotive industry.

3M Heavy-Bodied Model

The 3M Heavy-Bodied Seam Sealer, model 08308, offers a reliable solution for automotive seam sealing. This two-part epoxy sealant is designed to deliver a strong, durable bead that matches OEM standards, ensuring professional results every time.

Its formulation supports high-performance sealing on various surfaces, making it a trusted choice for body shops and repair professionals who need consistent quality from a recognized brand like 3M.

Fast Cure Time Benefits

This 200 ml cartridge of 3M Heavy-Bodied Seam Sealer cures fully in just one hour, allowing technicians to work efficiently without long wait times. The fast cure time reduces downtime and speeds up repair processes.

Quick curing also minimizes the risk of seam damage during handling, helping maintain a high-quality seal on automotive parts such as door skins and roof seams.

Self-Mixing Cartridge Format

The 3M 200 ml cartridge uses a dual syringe system that self-mixes the two-part epoxy sealant perfectly every time. This eliminates the mess and waste associated with manual mixing, improving job site cleanliness and efficiency.

Its metered mixing system ensures the right ratio of components, which supports consistent curing and seam strength, making it easier for technicians to achieve OEM-quality results.

Heavy-Bodied Non-Flowing Formula

The heavy-bodied formula of this 3M seam sealer is non-flowing, allowing easy tooling and texturizing to match OEM seam appearances. This feature is essential for replicating the look and function of factory-applied seam sealers.

Technicians can apply it on both vertical and horizontal seams, including floor pans and trunk floors, with confidence that the sealant will stay in place and provide lasting protection.

Pack Count And Compatibility

This product is sold in cases of six 200 ml cartridges, making it convenient for shops that require multiple units for ongoing projects. The pack size supports efficient inventory management and job readiness.

The cartridges are compatible with several 3M applicators, including manual and pneumatic models, ensuring flexibility in application methods to suit different technician preferences and job requirements.