Does the 10oz. Silicone require purchasing a special caulk gun? I was previously shipped tubes made of metal with pull tap opening like on a soup can

I was concerned as well but it has an internal plastic follower cup that a traditional caulking gun presses against: Similar to the traditional caulk tube. The additional metal seal helps to prolong the storage of the adhesive sealant.

Has anyone tried mixing a color pigment into the glue before application? Will this effect the cure?

I have not and can only advise you give 3M support line a call and ask them and if you can I am sure they will tell you which coloring to use. I would not just mix in any color you don't know how the glue will react to it. Give 3M a call I am sure they will be glad to help.

My kitty put a couple of pin hole sized punctures in my scuba bcd, causing a small, slow leak. will this patch it?

Yes it will. Allow five days to cure. Don’t use the fast cure.

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Marine Adhesive Sealant 5200 - Permanent Bonding and Sealing for Boats and Marine Applications - Black - 3 Ounces

Product ID: 4613298

Details

Brand
3M
Item Weight
4.8 ounces
Item dimensions L x W x H
1.4 x 4.9 x
Material
Plastic
Style
5200

⏳48-hour handling strength

⚓Permanent marine-grade bond

🌊Saltwater & weather resistant

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Sold byAmazon MongoliaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚓ Seal your marine projects with confidence—because your boat deserves the best!

AMPLE WORKING TIME - Generous open time lets you perfect your application before it sets in 48 hours.
FLEXES WITH THE WAVES - Elastomeric polyurethane absorbs vibration, swelling, shrinking, and shock without cracking.
UNBREAKABLE MARINE BOND - Creates a permanent, watertight seal on wood, fiberglass, and metal for ultimate durability.
SALTWATER PROOF PERFORMANCE - Engineered to resist harsh saltwater and weathering both above and below the waterline.
VERSATILE APPLICATION MASTERY - Ideal for deck housings, hull fittings, portholes, and more—trusted by pros worldwide.

3M Marine Adhesive Sealant 5200 is a professional-grade, black polyurethane sealant designed for permanent bonding and sealing in demanding marine environments. It offers exceptional flexibility to withstand vibration and structural movement, resists saltwater corrosion, and provides a reliable, watertight seal with a 48-hour curing time. Perfect for wood, fiberglass, and metal substrates, it’s the go-to choice for boat builders and marine professionals seeking durable, long-lasting adhesion.

Specifications

ASIN	B000Y89JC8
Best Sellers Rank	#631 in Automotive ( See Top 100 in Automotive ) #15 in Thread Lock Sealers
Brand Name	3M
Color	Black
Compatible Material	Wood
Customer Reviews	4.5 4.5 out of 5 stars (10,457)
Global Trade Identification Number	00051135052051
Included Components	marine sealant
Item Dimensions	1.4 x 4.9 x 8.8 inches
Item Form	Ounces
Item Type Name	marine sealant
Item Weight	4.8 ounces
Manufacturer	3M
Material Type	Plastic
Model	5200
Number of Items	1
Part Number	051135052051
Style Name	5200
Surface Recommendation	Floor, Wall
UPC	051135052051
Unit Count	3 Fluid Ounces
Warranty Description	AS Printed
Water Resistance Level	Waterproof

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