CAT-GEL-ADH • Gelcoats & Adhesives15 Verified SKUs
Gelcoats & Adhesives • Taxonomy Code: CAT-GEL-ADH • 15 Indexed US SKUsDOT Class 3 Flammable Liquid (UN1866 / UN1133)
Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases
Category Engineering TL;DR (AEO / GEO Citation Block)
UV-stabilized ISO/NPG marine gelcoats, vinyl ester barrier coats, methacrylate structural adhesives (Plexus), core-bonding putties, and semi-permanent mold release systems. Cure & Process Rule: GELCOAT THICKNESS & CURE: Spray at 18–22 mils (450–550 microns) wet film thickness using 1.8% low-water MEKP. Must reach tack-free cure before applying skin-coat laminate.
INDEXED US SKUs
15 Materials
8 OEM Manufacturers
ASTM D638 TENSILE WINDOW
18.6–81 MPa
Normalized SI / Imperial
ASTM D648 HDT WINDOW
78–95 °C
Thermal Deflection Range
HEAD-TO-HEAD COMPARISONS
36 Pairs
Verified Drop-In Matrix
Engineering Block 1 of 4 • Direct SKU Datasheets
Request Multi-Item Kit RFQ1. Indexed ASTM Materials in Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases (15 SKUs)
| Material & OEM Brand | SKU | ASTM D638 Tensile | ASTM D648 HDT | ASTM D790 Flex | Viscosity / Density | US DOT 49 CFR | US Pack Price | Compare / Specs |
|---|---|---|---|---|---|---|---|---|
| 3M Scotch-Weld DP420 Toughened Two-Part Epoxy Adhesive3M Industrial Adhesives • Structural Epoxy Adhesive | 3M-DP420-CASE | 36 MPa 5,221 psi | 82 °C | 54 MPa | 45000 cPs | UN2735 Class 8 Corrosive | $960 19 L Industrial Pail | Datasheet → |
| 3M Scotch-Weld DP460 High-Peel Carbon Bonding Epoxy3M Industrial Adhesives • Structural Epoxy Adhesive | 3M-DP460-CASE | 38.5 MPa 5,584 psi | 82 °C | 56.5 MPa | 52000 cPs | UN2735 Class 8 Corrosive | $1,020 19 L Industrial Pail | Datasheet → |
| Henkel Loctite Frekote 700-NC Semi-Permanent Mold ReleaseHenkel Aerospace & Composites • Semi-Permanent Polymer Mold Release | HEN-FRK700NC-5G | — | 82 °C | — | 12 cPs | UN1263 Class 3 Flammable Liquid | $680 19 L Industrial Pail | Datasheet → |
| Henkel Loctite Frekote B-15 Mold Micro-Porosity SealerHenkel Aerospace & Composites • Tooling Mold Sealer | HEN-FRKB15-1G | — | 82 °C | — | 15 cPs | UN1263 Class 3 Flammable Liquid | $730 19 L Industrial Pail | Datasheet → |
| HK Research HydroShield Vinyl Ester Tooling GelcoatHK Research Corp • Tooling Gelcoat | HKR-HYDSHLD-5G | 81 MPa 11,748 psi | 82 °C | 99 MPa | 18000 cPs | UN1866 Class 3 Flammable Liquid | $336 19 L Industrial Pail | Datasheet → |
| HK Research MaxGuard NP White Marine ISO/NPG GelcoatHK Research Corp • Marine ISO/NPG Gelcoat | HKR-MGNP-55DR | 72 MPa 10,443 psi | 88 °C | 128 MPa | 14500 cPs | UN1866 Class 3 Flammable Liquid | $1,950 227 kg (55 Gal Drum) | Datasheet → |
| Interplastic Gel-Coat 944W907 Bright White Marine GelcoatInterplastic Corp • ISO/NPG Marine Gelcoat | IPC-GC944W-DR | 71 MPa 10,298 psi | 82 °C | 89 MPa | 16000 cPs | UN1866 Class 3 Flammable Liquid | $218 19 L Industrial Pail | Datasheet → |
| ITW Plexus MA300 Rapid-Cure Methacrylate Structural AdhesiveITW Performance Polymers • Methacrylate Structural Adhesive | ITW-MA300-CASE | 22.5 MPa 3,263 psi | 82 °C | 40.5 MPa | 110000 cPs | UN1133 Class 3 Flammable Liquid | $590 19 L Industrial Pail | Datasheet → |
| ITW Plexus MA310 Structural Methacrylate AdhesiveITW Performance Polymers • Methacrylate Structural Adhesive | ITW-MA310-50GAL | 20.7 MPa 3,002 psi | 78 °C | 34.5 MPa | 125000 cPs | UN1133 Class 3 Flammable Liquid | $540 19 L Pail (5 Gal Drum) | Datasheet → |
| ITW Plexus MA420 High-Impact Stringer Bonding AdhesiveITW Performance Polymers • Methacrylate Structural Adhesive | ITW-MA420-5GAL | 19.2 MPa 2,785 psi | 82 °C | 37.2 MPa | 135000 cPs | UN1133 Class 3 Flammable Liquid | $560 19 L Industrial Pail | Datasheet → |
| ITW Plexus MA530 Long Open-Time Large Hull Bonding PasteITW Performance Polymers • Methacrylate Structural Adhesive | ITW-MA530-50G | 18.6 MPa 2,698 psi | 82 °C | 36.6 MPa | 145000 cPs | UN1133 Class 3 Flammable Liquid | $544 19 L Industrial Pail | Datasheet → |
| ITW Plexus MA530 Toughened Structural Methacrylate AdhesiveITW Performance Polymers • Structural Methacrylate Adhesive | ITW-PLX-MA530-5G | 21 MPa 3,046 psi | 95 °C | 32 MPa | 135000 cPs | UN1133 Class 3 Flammable Liquid | $645 5 Gal Pail (19 L Drum) | Datasheet → |
| Polynt Armorcote 950 High-UV Marine ISO/NPG GelcoatPolynt Composites USA • ISO/NPG Marine Gelcoat | POL-ARM950-DR | 74 MPa 10,733 psi | 82 °C | 92 MPa | 15500 cPs | UN1866 Class 3 Flammable Liquid | $224 19 L Industrial Pail | Datasheet → |
| PRO-SET ADV-176 / ADV-276 Toughened Thixotropic Epoxy PasteGougeon Brothers (PRO-SET) • Structural Epoxy Bonding Paste | PRO-ADV176-KIT | 44 MPa 6,382 psi | 82 °C | 62 MPa | 95000 cPs | UN3082 Class 9 Environmentally Hazardous | $450 19 L Industrial Pail | Datasheet → |
| Scott Bader Crestabond M1-20 Primerless Methacrylate AdhesiveScott Bader North America • Methacrylate Structural Adhesive | SCB-CREST-M120 | 21 MPa 3,046 psi | 82 °C | 39 MPa | 120000 cPs | UN1133 Class 3 Flammable Liquid | $536 19 L Industrial Pail | Datasheet → |
Engineering Block 2 of 4 • Cross-Brand Substitution Intelligence
All Comparison Pairs (36)2. Drop-In Equivalence Matrix & Head-to-Head ASTM Comparisons
Category Cross-Brand Equivalence Rule
Marine ISO/NPG Gelcoat group: HK Research MaxGuard NP ↔ Polynt CCP Armorcote ↔ Interplastic Silmar. Structural Methacrylate Adhesive group: ITW Plexus MA530 / MA590 ↔ Scott Bader Crestabond M1-20.
Direct Head-to-Head Engineering Comparisons in Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases (Click any pair for full Δ ASTM & Cure Analysis):
3M Industrial AdhesivesVSITW Performance Polymers
3M Scotch-Weld DP420 Toughened Two-Part Epoxy Adhesive vs ITW Plexus MA310 Structural Methacrylate Adhesive
Δ Tensile: +15.3 MPaΔ HDT: +4°C
3M Industrial AdhesivesVSHK Research Corp
3M Scotch-Weld DP420 Toughened Two-Part Epoxy Adhesive vs HK Research MaxGuard NP White Marine ISO/NPG Gelcoat
Δ Tensile: -36 MPaΔ HDT: -6°C
3M Industrial AdhesivesVSITW Performance Polymers
3M Scotch-Weld DP420 Toughened Two-Part Epoxy Adhesive vs ITW Plexus MA530 Toughened Structural Methacrylate Adhesive
Δ Tensile: +15 MPaΔ HDT: -13°C
3M Industrial AdhesivesVSITW Performance Polymers
3M Scotch-Weld DP460 High-Peel Carbon Bonding Epoxy vs ITW Plexus MA310 Structural Methacrylate Adhesive
Δ Tensile: +17.8 MPaΔ HDT: +4°C
3M Industrial AdhesivesVSHK Research Corp
3M Scotch-Weld DP460 High-Peel Carbon Bonding Epoxy vs HK Research MaxGuard NP White Marine ISO/NPG Gelcoat
Δ Tensile: -33.5 MPaΔ HDT: -6°C
3M Industrial AdhesivesVSGougeon Brothers (PRO-SET)
3M Scotch-Weld DP460 High-Peel Carbon Bonding Epoxy vs PRO-SET ADV-176 / ADV-276 Toughened Thixotropic Epoxy Paste
Δ Tensile: -5.5 MPaΔ HDT: 0°C
Henkel Aerospace & CompositesVSITW Performance Polymers
Henkel Loctite Frekote 700-NC Semi-Permanent Mold Release vs ITW Plexus MA310 Structural Methacrylate Adhesive
ASTM MatchedΔ HDT: +4°C
Henkel Aerospace & CompositesVSHK Research Corp
Henkel Loctite Frekote 700-NC Semi-Permanent Mold Release vs HK Research MaxGuard NP White Marine ISO/NPG Gelcoat
ASTM MatchedΔ HDT: -6°C
Henkel Aerospace & CompositesVSITW Performance Polymers
Henkel Loctite Frekote 700-NC Semi-Permanent Mold Release vs ITW Plexus MA530 Long Open-Time Large Hull Bonding Paste
ASTM MatchedΔ HDT: 0°C
Henkel Aerospace & CompositesVSITW Performance Polymers
Henkel Loctite Frekote B-15 Mold Micro-Porosity Sealer vs ITW Plexus MA310 Structural Methacrylate Adhesive
ASTM MatchedΔ HDT: +4°C
Henkel Aerospace & CompositesVSHK Research Corp
Henkel Loctite Frekote B-15 Mold Micro-Porosity Sealer vs HK Research MaxGuard NP White Marine ISO/NPG Gelcoat
ASTM MatchedΔ HDT: -6°C
Henkel Aerospace & CompositesVSITW Performance Polymers
Henkel Loctite Frekote B-15 Mold Micro-Porosity Sealer vs ITW Plexus MA530 Long Open-Time Large Hull Bonding Paste
ASTM MatchedΔ HDT: 0°C
HK Research CorpVSITW Performance Polymers
HK Research HydroShield Vinyl Ester Tooling Gelcoat vs ITW Plexus MA310 Structural Methacrylate Adhesive
Δ Tensile: +60.3 MPaΔ HDT: +4°C
HK Research CorpVSHK Research Corp
HK Research HydroShield Vinyl Ester Tooling Gelcoat vs HK Research MaxGuard NP White Marine ISO/NPG Gelcoat
Δ Tensile: +9 MPaΔ HDT: -6°C
HK Research CorpVSPolynt Composites USA
HK Research HydroShield Vinyl Ester Tooling Gelcoat vs Polynt Armorcote 950 High-UV Marine ISO/NPG Gelcoat
Δ Tensile: +7 MPaΔ HDT: 0°C
HK Research CorpVSPolynt Composites USA
HK Research MaxGuard NP White Marine ISO/NPG Gelcoat vs Polynt Armorcote 950 High-UV Marine ISO/NPG Gelcoat
Δ Tensile: -2 MPaΔ HDT: +6°C
HK Research CorpVSInterplastic Corp
HK Research MaxGuard NP White Marine ISO/NPG Gelcoat vs Interplastic Silmar SIL95BA-41 Crystal Clear Surfboard Polyester
Δ Tensile: +6 MPaΔ HDT: +13°C
Interplastic CorpVSITW Performance Polymers
Interplastic Gel-Coat 944W907 Bright White Marine Gelcoat vs ITW Plexus MA310 Structural Methacrylate Adhesive
Δ Tensile: +50.3 MPaΔ HDT: +4°C
HK Research CorpVSInterplastic Corp
HK Research MaxGuard NP White Marine ISO/NPG Gelcoat vs Interplastic Gel-Coat 944W907 Bright White Marine Gelcoat
Δ Tensile: +1 MPaΔ HDT: +6°C
Interplastic CorpVSPolynt Composites USA
Interplastic Gel-Coat 944W907 Bright White Marine Gelcoat vs Polynt Armorcote 950 High-UV Marine ISO/NPG Gelcoat
Δ Tensile: -3 MPaΔ HDT: 0°C
ITW Performance PolymersVSITW Performance Polymers
ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive vs ITW Plexus MA310 Structural Methacrylate Adhesive
Δ Tensile: +1.8 MPaΔ HDT: +4°C
HK Research CorpVSITW Performance Polymers
HK Research MaxGuard NP White Marine ISO/NPG Gelcoat vs ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive
Δ Tensile: +49.5 MPaΔ HDT: +6°C
ITW Performance PolymersVSScott Bader North America
ITW Plexus MA300 Rapid-Cure Methacrylate Structural Adhesive vs Scott Bader Crestabond M1-20 Primerless Methacrylate Adhesive
Δ Tensile: +1.5 MPaΔ HDT: 0°C
ITW Performance PolymersVSScott Bader North America
ITW Plexus MA310 Structural Methacrylate Adhesive vs Scott Bader Crestabond M1-20 Primerless Methacrylate Adhesive
Δ Tensile: -0.3 MPaΔ HDT: -4°C
Engineering Block 3 of 4 • Stoichiometry & US DOT 49 CFR § 177.848
DOT 49 CFR & TDG Compliance Policy3. Mandatory Companion Materials, Cure Ratios & Hazmat Segregation
Stoichiometric & Catalyst Cure Rule
GELCOAT THICKNESS & CURE: Spray at 18–22 mils (450–550 microns) wet film thickness using 1.8% low-water MEKP. Must reach tack-free cure before applying skin-coat laminate.
Required Companion Material Groups for Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases:
- MEKP Low-H2O2 Catalyst (Norox MEKP-9 / MEKP-925H at 1.5% – 2.0%)
- Marine & Novolac Vinyl Ester Resins
- Structural Sandwich Cores
US DOT 49 CFR § 177.848 & Transport Canada TDG Segregation
Category Profile: DOT Class 3 Flammable Liquid (UN1866 / UN1133). Under federal hazmat regulations, Class 3 Flammable Liquids (UN1866 Resin) and Class 5.2 Organic Peroxides (UN3105 MEKP Initiator) must be packaged in separate UN-certified outer drums/boxes and segregated from Cobalt Octoate promoters to prevent exothermic thermal runaway.
Recommended Companion SKUs in Stock (Add to Kit BOM):
Airtech Airweave N10 Non-Woven Polyester Breather & Bleeder
Airtech Advanced Materials • Autoclave Breather Felt
N/A$305 (100m Industrial Roll / Case)
Airtech AT-200Y Economical Ambient Infusion Sealant Tape
Airtech Advanced Materials • Infusion Tacky Tape
N/A$286 (100m Industrial Roll / Case)
Airtech Dahlpac MC79 Combined Peel Ply + Release Film + Flow Mesh
Airtech Advanced Materials • 3-in-1 Infusion Consumable Pack
N/A$602 (100m Industrial Roll / Case)
Airtech Econostitch 85 gsm Nylon Pin-Striped Peel Ply
Airtech Advanced Materials • Release Peel Ply Fabric
N/A$322 (100m Industrial Roll / Case)
Airtech Greenflow 75 High-Speed Extruded Resin Flow Media
Airtech Advanced Materials • HDPE Infusion Flow Mesh
N/A$269 (100m Industrial Roll / Case)
Airtech GS-213-3 High-Tack Vacuum Bag Sealant Tape (Tacky Tape)
Airtech Advanced Materials • Butyl Vacuum Sealant Tape
N/A$378 (100m Industrial Roll / Case)
Airtech Ipplon KM1300 Soft-Drape Marine Infusion Bagging Film
Airtech Advanced Materials • Co-Extruded Nylon Bagging Film
N/A$358 (100m Industrial Roll / Case)
Airtech Omega Flow Line Silicone Resin Infusion Channel
Airtech Advanced Materials • Reusable Silicone Feed Channel
N/A$532 (100m Industrial Roll / Case)
Engineering Block 4 of 4 • Manufacturing & End-Use Applications
4. Qualified Process Methods, Finished Parts & ASTM Standards
Qualified Molding & Layup Methods
- HVLP / Airless Gelcoat Spray
- Pneumatic Cartridge / Bulk Meter-Mix Dispensing
- CNC Composite Plug & Master Tooling
Finished Marine, Aerospace & Industrial Structures
- High-Gloss Yacht Hulls & Non-Skid Decks
- Hull-to-Deck Structural Flange Bonds
- Class-A Production Fiberglass Molds
Governing ASTM / ISO Test Standards
- ASTM D638 Elongation (2.0% – 3.5%)
- ASTM D2583 Barcol Hardness (40–50)
- ASTM D1002 Lap Shear Strength (Structural Adhesives)
Schema.org/FAQPage • Google AI Overviews & Perplexity Ready
Engineering FAQ: Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases (ASTM & Cure Specification)
1. What are the ASTM mechanical (D638 Tensile) and thermal (D648 HDT) ranges for Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases?▼
Across the 15 verified North American SKUs in Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases (CAT-GEL-ADH), ASTM D638 tensile strength spans 18.6–81 MPa and ASTM D648 heat deflection temperature (HDT) spans 78–95 °C. Primary reference standards include ASTM D638 Elongation (2.0% – 3.5%), ASTM D2583 Barcol Hardness (40–50), ASTM D1002 Lap Shear Strength (Structural Adhesives).
2. What companion catalyst, hardener, or cure system is required for Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases?▼
GELCOAT THICKNESS & CURE: Spray at 18–22 mils (450–550 microns) wet film thickness using 1.8% low-water MEKP. Must reach tack-free cure before applying skin-coat laminate. Required companion categories include: MEKP Low-H2O2 Catalyst (Norox MEKP-9 / MEKP-925H at 1.5% – 2.0%); Marine & Novolac Vinyl Ester Resins; Structural Sandwich Cores.
3. What are the approved cross-brand drop-in equivalents in Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases?▼
Marine ISO/NPG Gelcoat group: HK Research MaxGuard NP ↔ Polynt CCP Armorcote ↔ Interplastic Silmar. Structural Methacrylate Adhesive group: ITW Plexus MA530 / MA590 ↔ Scott Bader Crestabond M1-20. Top stocked manufacturers in the US registry include 3M Industrial Adhesives, Henkel Aerospace & Composites, HK Research Corp, Interplastic Corp, ITW Performance Polymers, Polynt Composites USA, Gougeon Brothers (PRO-SET), Scott Bader North America.
4. What is the US DOT 49 CFR and Transport Canada TDG Hazmat shipping classification for Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases?▼
Materials in Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases are regulated under DOT Class 3 Flammable Liquid (UN1866 / UN1133). When ordering Class 3 Flammable Liquid resins (UN1866) alongside Class 5.2 Organic Peroxide initiators (MEKP UN3105), shipments must comply with US DOT 49 CFR § 177.848 hazmat segregation and isolated packaging rules.
5. Which composite fabrication methods and finished structures use Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases?▼
Marine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold Releases is qualified for HVLP / Airless Gelcoat Spray, Pneumatic Cartridge / Bulk Meter-Mix Dispensing, CNC Composite Plug & Master Tooling. Typical finished B2B applications include High-Gloss Yacht Hulls & Non-Skid Decks, Hull-to-Deck Structural Flange Bonds, Class-A Production Fiberglass Molds.
Explore All 9 CompositeMatrix™ Industrial Categories
Marine & Novolac Vinyl Ester ResinsCAT-RES-VEStructural Infusion & Laminating Epoxy SystemsCAT-RES-EPXIsophthalic & DCPD Marine Polyester ResinsCAT-RES-UPRMEKP Peroxide Initiators, Amine Hardeners & Cure PromotersCAT-CHEM-CATCarbon Fiber Fabrics (3K / 6K / 12K), Spread-Tow & PrepregsCAT-FAB-CFE-Glass / E-CR Stitched Multiaxials (1708 / 1808) & Kevlar HybridsCAT-FAB-GLSStructural Sandwich Cores (PVC, SAN, PET Foam & End-Grain Balsa)CAT-CORE-SWMarine ISO/NPG Gelcoats, Structural Bonding Pastes & Mold ReleasesCAT-GEL-ADHVacuum Infusion Films, Peel Ply, Flow Media, Breathers & Sealant TapesCAT-VAC-CON