Sikaflex®-252 is manufactured in … We tested them for strength, adhesion, and flexibility for this article and will be testing them for mildew resistance, ease of cleaning, and weathering resistance for future reports. Sikaflex has better shock mounting qualities for your glass than 5200. Starting at $14.99. Hope this helps. Sikaflex®-291 bonds extremely well to the materials commonly used in marine construction like wood, metals, metal primers and paint coatings (2-c systems), ceramic materials and plastics (GRP, etc.). In tests, it was less adhesive than other silicones. This is a one-component, elastic, humidity-curing, MS polymer-based structural adhesive with extended skin time. Click or tap to zoom. 22nd Dec 2009 - 18:57 #1. The 3M 5200 failed at just 55 psi during the aluminum-bonding trial. 3M vs. Sika is most interesting. When we flexed the BoatLife Caulk sample after curing, it immediately de-bonded and popped loose under light pressure, leaving no residue behind. Caulks with removable tips are easier to reuse, since you can remove the cured plug more readily. Although we dislike silicone sealants for most marine applications, it is well-suited for mounting hatch lenses and in locations where fuel or gasoline exposure is expected. Sikaflex 291 LOT. Metals and polyethylene are impermeable, while fiberglass and wood have some moisture content and cure more quickly. Sudburys Elastometric Sealant is a synthetic, rubber-based sealant whose main purpose is gap-filling and sealing, rather than adhesion. The original elastic bonding adhesive, Sikaflex-252 offers great adhesive strength coupled with elasticity. They must stick to a wide variety of surfaces, including gelcoat, aluminum, wood, stainless, and plastics. Abrading the substrate before using adhesives or sealants tends to improve their performance – especially when bonding to aluminium. An upcoming report will look at products for removing adhesive sealants, and in future reports, we will be looking at adhesives mildew resistance and aging. Bottom line: This is our Best Choice for plastic lens replacement. Sikaflex 291i is one of the market leading Sealants & Adhesives for use in the Marine Industry, and … We saw the same bond failure in lab shear testing. The structural adhesives were much stronger, but their performance was below that specified in their product data sheets. Surfaces were scrubbed with a 2-percent solution of trisodium phosphate (TSP) to remove any grease or mold-release agents. 3oz(300ml) Cartridge - White. All the failures for the shear test were cohesive. London Boat Show – remember when January looked like this? On its website Sika lists seven products for marine applications: deck caulking, sealing compound, two grades of adhesive (strong and high-strength), direct glazing adhesive, spreadable adhesive for panels and sheets, and finally a sealing/bonding adhesive where flame retardation is required. You can also drill out the plug. All rights reserved. We expect a lot from adhesive sealants for the marine environment. This combination bonds and seals at the same time, offers excellent gap filling capabilities and compensates for loose tolerances in the building process. A visit to my local chandlery revealed only two products in stock on my shopping list of six marine products from three manufacturers (Sika, Aquaseal and 3M), but I did find another product, by Saba, that I’d never heard of. The adhesive sealant is extremely strong, retains its strength above or below water line. Tearing instead of than peeling, 3M 4200 Fast Cure showed good adhesion.4. You want either Sikaflex 221 or 252. Sika . 3M™ Marine Adhesive Sealant 5200 White. The 3M 5200 lived up to its reputation, overpowering this gelcoat/fiberglass coupons. It has excellent gap-filling capability and can be painted over and sanded, for use above or below the waterline. Bottom line: While it has a long history as a bedding sealant, we think there are better products. It bonds and seals, has excellent gap-filling properties, and compensates for loose tolerances. PU sealer. Care was taken to clean the surfaces to ensure there was no dust, grease, wax or other contaminants present. We offer caulk and silicone products for kitchen and bath, fire barrier, concrete and masonry, … Typically, these could be deck fittings such as cleats, winches, rope clutches, hatches and windows. Finally, we tested all our materials with one non-structural adhesive – Aquaseal mSEAL 295 – with all the contact surfaces abraded with 400-grit wet and dry paper before cleaning. In our experience, most of the these products can be put into service within the manufacturers specified timeframes (ranging from a few hours to one week), but for bondlines that will be subjected to high loads, you should wait at least a month before pushing the limit of any products adhesion strength, if possible. ... 3M … (There is … In the case of polyurethanes, atmospheric moisture is the primary curing agent. Its UV resistance is at least as good as plastic glazing, and it has better adhesive properties than other silicones. This is because the manufacturers test just the adhesive itself; hence the failure is always cohesive. Starting at $9.85. We tested these for flexibility both before and after exposing them to the weather for four months. All specimens were tested on a Hounsfield (Monsanto) tensile testing machine in the materials laboratory at Southampton Solent University. ... (Which wasn't the question of the OP) there's 3M 4200. The acrylic and GRP fared much better, with most of the structural adhesives failing in a cohesive mode. 3M Marine Adhesive Sealant Fast Cure 5200 is a permanent marine adhesive & sealant. Adhesives, meanwhile, can be used to complement screw or bolt fastenings, or to carry the load without the need to penetrate the deck or coachroof with extra fixings. Or 3M 5200 fast cure if you don't need a whole cartridge. Failure for the metals was adhesive, while the acrylic and glassfibre were 50/50 cohesive/adhesive. It is a low-hazard product and contains no water or solvent. This gave better-than-average performance for the glassfibre, acrylic and aluminium, but showed reduced adhesion to steel. The maximum force is divided by the original cross-sectional area that is subjected to the force, giving load per unit area. 3M™ Marine Adhesive Sealant 5200 White. Sika Sikaflex-252 Polyurethane Adhesive Black is a one component, moisture-curing elastic adhesive that is used for bonding of floors, applications for manufacturing, exterior and interior building components. Not for fittings that may need to be remove; Below waterline use; Can be painted; Polyurethanes not UV stable unless stated This tape lasts forever in the toolbox, and very little cleanup is required. 3M recommend Scotch Weld Structural Adhesive Primer EC-1945 B/A. They also must be compatible with the bonding materials, and not cause deterioration. Although it has almost no tensile strength-requiring hardware fasteners-this bedding material has more than enough adhesion for sealing off deck penetrations like hatches. Getting the right product for a specific application can be a problem as chandlers only stock the most popular sealants and adhesives and are sometimes unable to get hold of single cartridges. We couldn't separate any of the stronger products without breaking our fiberglass test coupons. It has a medium viscosity, a high modulus of elasticity and extended open time. Products that do not adhere to the substrate are useful only for hardware that is well-secured by mechanical fasteners. Sikaflex 291i - The Marine Sealant & Adhesive With a slight change to the curing system (The icure system) Sikaflex 291 - Marine Grade Sealant is renamed Sika 291i. Curing: The process of the adhesive/sealant solidifying. 23 Posts . Product details. Full-strength adhesion takes time. Last post. Similar to 5200, 3Ms 4200 is not as strong but it cures faster. Compare. The adhesive did better than the others with the glassfibre. Multiple sources including boat yard workers have claimed it's so strong its … Bottom line: This tied the Sika 291 as the Best Choice for an adhesive sealant. 3M Adhesive Sealants are suitable for bonding and sealing a wide variety of substrates including: glass, wood, 5200 5200 FC • Marine grade • Above and below waterline use • … If you're going to sail you'll be doing some stitching-no two ways about it. Set your store to see local availability Add to Cart. Haluamme auttaa asiakkaitamme menestymään omassa liiketoiminnassaan. I would not have guest Construction Adhesives were this strong. As a result, they bring extreme adhesion to sealants and bond well to most modern boatbuilding materials. Tensile stress: The force is perpendicular to the cross-sectional area under load. A few caveats worth mentioning: Butyl tape can run in hot environments, so check its temperature rating; don't use it below the waterline; and don't use it in places where it will be exposed to fuel. Sikaflex 10.1 oz. For bedding hatches, winches, and other items, we like the Sudbury Elastomeric Sealant and butyl tape. Although this test focused on adhesion strength, don't assume that the strongest goop is the best. Also, it will not damage the plastics. Sikaflex 291 is an all purpose marine adhesive / sealant that is used for bedding and light bonding, above and below the waterline. This was one of the best products on test, with good adhesive properties with our materials. Sikaflex ® Sika Corporation -505UV 2 / 3 Industry Division 30800 Stephenson Highway Madison Heights, Mi 48071 USA Tel. Alex Bell and a PBO test team get stuck into a thorough trial of nine products to assess which adhesives and sealants bond best to aluminium, steel, acrylic and glassfibre. Has excellent resistance … Sikaflex-521 UV is sol This is a popular builders’ merchant product, a one-part, moisture-curing polymer suitable for a wide range of elastic sealing and non-structural bonding operations. Your transom will thank you for years to come with 3M..I'm partial to the 5200 (Unless you … It has excellent gap-filling capability and can be painted over and sanded, for use above or below the waterline. BoatLifes Silicone Rubber has a very strong and unusual acetic acid odor. 3M in general bonds better to FRP polyester, Sika 291 better to most plastics and metals. Seal the tip with aluminum foil immediately after use and during any pause in activity to prevent water vapor from entering. Adhesive failure: The adhesive/sealant releases from the substrate. Have a great day, Rob. Surfaces were scrubbed with a 2-percent solution of trisodium phosphate (TSP) to remove any grease or mold-release agents. However, there was partial failure of the bond with the substrate for all our specimens. Examples; 3M; 5200 & 4200, Sikaflex 292, Sikaflex 291, Properties. 25 posts / 0 new . Learn more about different types of sealants and industry applications, view customer testimonial videos and more. ... 3M 5200 Marine Adhesive Sealant. Its Recommended. Elastomeric sealants create a waterproof seal that make them a good option for stopping leaks, sealing portholes, and bedding hardware and windshields. For long-term field-testing, we used the top-performing products in a variety of boat maintenance and repair applications. 3M vs. Sika is most interesting. Discussion Starter • #1 • Mar 25, 2010. The Boat Caulk failed our flex test on duplicate shear samples, the easiest of the tests. And there are removers that work pretty well on 3M 5200. The issue was very much the bond between the adhesive and the surface in contact, but this property is desirable if disassembly of the bonded parts is required at some point. And the notion that there is no use for permanent bonding with 3M 5200 is false. This is a fast-cure (one-day), one-component polyurethane structural adhesive/sealant, suitable for above or below the waterline. Sika Sikaflex-252 Polyurethane Elastic Adhesive White 20 oz Sausage. 3M in general bonds better to FRP polyester, Sika 291 better to most plastics and metals. Testers then used a bead of caulk (fillet) to bond two 2- by 6-inch strips of textured gelcoat to form a 90-degree corner. Product details. I would not have guest Construction Adhesives were this strong. Both are available on Amazon. 3M Adhesives 51135065600 Marine Adhesive Sealant Fast Cure 4200 (06560) – Semi-Permanent Flexible Adhesive Sealant for Boats and RVs – White - 1/10 Gallon ... AP Products 017-90915 Sikaflex-252, White. When it comes to sticking two bits of anything together, I tend to be a belt-and-braces person – or should that be a nut, bolt and glue person? This ‘shim’ is recommended to ensure that the adhesive or sealant is not squeezed out if fixing screws or bolts are pulled up tight. Although Loctite does not recommend this product for continuous immersion, it has passed industry standard tests for moderate-term immersion. Dows 795 has a proven record for sealing port or hatch glazing (Lexan, acrylic, or glass). Hunter Ranger 245 on test – a boat for our time? Sealants do not possess great bonding strength. Available online from The Boat Warehouse … The test products varied in viscosity: Loctite and Sika products are generally thicker, while 3M 5200 is noticeably thinner and prone to running if applied too liberally or if a large fillet is desired. Product data sheets are available for each of the adhesives we tested: these varied in the amount of additional information they presented.

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