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Structural Bonding Solutions

Scotch-Weld™ Structural Adhesives

Engineering-grade structural adhesives for aerospace, automotive, electronics, and industrial manufacturing. 216+ formulations spanning epoxy, urethane, acrylic, and anaerobic chemistries — engineered to replace welding and mechanical fasteners with stronger, lighter, more durable bonds.

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Adhesive Chemistries
Epoxy
High-Strength Structural
The workhorse of structural bonding. Epoxy adhesives deliver exceptional shear strength, chemical resistance, and temperature performance. Available as one-part heat-cure or two-part room-temperature systems.
Aerospace Metal-to-Metal High Temp Rigid Bond
Urethane
Flexible & Impact Resistant
Combines structural strength with flexibility to accommodate thermal expansion and vibration. Ideal for dissimilar material bonding — composites to metals, plastics to substrates — without priming in many cases.
Composites Flexible Bond Dissimilar Materials Fatigue Resistant
Acrylic
Fast Cure · Low Surface Prep
Structural acrylic adhesives cure rapidly with minimal surface preparation. High peel and impact resistance. Excellent for metals and many plastics. Preferred in metalworking and HVAC assembly where speed matters.
Fast Cure Metalworking HVAC Low Prep
Anaerobic
Thread & Flange Locking
Single-part systems that cure in the absence of oxygen when confined between metal surfaces. Used for thread locking, retaining, and flange sealing in precision assemblies and MRO applications.
Thread Lock Flange Seal MRO Metal-Only
Instant / CA
Cyanoacrylate · Rapid Bond
Cyanoacrylate (CA) adhesives cure in seconds with moisture. Ideal for close-fitting parts in production environments where fast throughput is essential. 19 Scotch-Weld formulations for varied substrates.
Seconds Cure High Production Close Fit 19 Grades
Adhesive Films
Structural Film Systems
Flexible film formats for bonding metals, honeycomb panels, and composite assemblies. Used extensively in aerospace for controlled bondline thickness, uniform adhesive distribution, and lightweight construction.
Aerospace Spec Honeycomb Composite 30 Grades
Product Categories
108
Two-Part Structural
Resin + hardener systems. Largest category with the broadest range of strength, flexibility, and cure options.
108 Products · Epoxy / Urethane / Acrylic
Urethane
Flexible & Impact Resistant
Combines structural strength with flexibility to accommodate thermal expansion and vibration. Ideal for dissimilar material bonding — composites to metals, plastics to substrates — without priming in many cases.
Composites Flexible Bond Dissimilar Materials Fatigue Resistant
Acrylic
Fast Cure · Low Surface Prep
Structural acrylic adhesives cure rapidly with minimal surface preparation. High peel and impact resistance. Excellent for metals and many plastics. Preferred in metalworking and HVAC assembly where speed matters.
Fast Cure Metalworking HVAC Low Prep
Anaerobic
Thread & Flange Locking
Single-part systems that cure in the absence of oxygen when confined between metal surfaces. Used for thread locking, retaining, and flange sealing in precision assemblies and MRO applications.
Thread Lock Flange Seal MRO Metal-Only
Instant / CA
Cyanoacrylate · Rapid Bond
Cyanoacrylate (CA) adhesives cure in seconds with moisture. Ideal for close-fitting parts in production environments where fast throughput is essential. 19 Scotch-Weld formulations for varied substrates.
Seconds Cure High Production Close Fit 19 Grades
Adhesive Films
Structural Film Systems
Flexible film formats for bonding metals, honeycomb panels, and composite assemblies. Used extensively in aerospace for controlled bondline thickness, uniform adhesive distribution, and lightweight construction.
Aerospace Spec Honeycomb Composite 30 Grades
Airtech Advanced Materials Group
Tooling prepregs, infusion resins, surface coats, laminating resins, and filler pastes for composite mold manufacture.
Toolmaster® Toolfusion® Infusioncoat®
Hexcel Corporation
Patented HexTool® quasi-isotropic machinable tooling compound for metal-tolerance composite tools. Epoxy and BMI grades.

HexTool® M61 HexTool® M81
General Plastics Manufacturing
LAST-A-FOAM® polyurethane foam tooling boards — high-temperature, aerospace-grade, flame-retardant rigid foam for master models and backup structures.
FR-4700 FR-6700 FR-3700
01

Pre-Pregs & Surface Coats

Hexcel · HexTool®
HexTool® M61 Machinable Tooling Compound
Hexcel's patented quasi-isotropic tooling prepreg — randomly layered strips of unidirectional AS4 carbon fiber prepreg consolidated into continuous rolled goods. Can be laid up by hand and CNC milled to close metal-like tolerances. Vacuum integrity maintained before and after machining, and after 500+ part cure cycles. Fabricated with HexPly® M61 BMI resin — ideal for 350°F (180°C) production tooling for carbon fiber aerospace structures. 20% the weight of Invar.
Primary Aerospace Tooling BMI Resin CNC Machinable 500+ Cure Cycles 350°F / 180°C
Key Specs
ResinHexPly® M61 (BMI)
FiberHexcel AS4 Carbon UD
Fiber Volume55%
Tg (dry)275°C (527°F)
Part Cure Temp180°C (355°F)
Weight vs Invar20% (5× lighter)
Hexcel · HexTool®
HexTool® M81 Tooling Compound
Epoxy-based quasi-isotropic machinable tooling compound for 250–300°F (120–150°C) part cure cycles. Uses HexPly® M81 toughened epoxy derived from Hexcel's 8552 resin. Dimensionally stable before and after machining. Suitable for development tools and lower-rate production at 350°F with careful thermal management. Lighter and more energy efficient than steel or aluminum tooling.
Toughened Epoxy (M81) 250–300°F Tools CNC Machinable Tg 220°C (428°F)
Airtech · Toolmaster®
Toolmaster® TMGP Carbon Tooling Prepreg
Carbon fiber epoxy tooling prepreg for hand laminated composite mold manufacture. Hot-melt system — no volatile solvents that could cause delamination. TMGP (carbon) and TMFP (fiberglass) versions share identical cure temperature and flow characteristics with Airpad® rubber, enabling co-cure of rubber pressure pads directly in the tool layup.
Carbon Tooling Prepreg Hot-Melt Co-Cures with Airpad®
Airtech · Toolmaster®
Toolmaster® TMFP Fiberglass Tooling Prepreg
Fiberglass version of the Toolmaster® tooling prepreg family. Same cure cycle and flow characteristics as TMGP carbon. Economical alternative for lower-temperature tooling applications and where glass CTE (coefficient of thermal expansion) is preferred for compatibility with the part material.


Fiberglass Tooling Prepreg Hot-Melt Economical
Airtech · Toolmaster®
Toolmaster® CEP High-Temperature Prepreg
High-temperature epoxy tooling prepreg rated to 232°C (450°F) service temperature. Not based on BMI chemistry — avoids the handling and processing difficulties associated with BMI systems. Handling characteristics similar to standard Toolmaster® epoxy tooling prepregs, making it accessible for layup shops familiar with lower-temperature systems.


Up to 232°C / 450°F Non-BMI Easy Layup
02

Resins & Surface Coats

Airtech · Toolfusion®
Toolfusion® 3A/3B High-Temperature Infusion Resin
Two-part, low-viscosity epoxy infusion resin for producing prepreg-quality composite molds using VARTM/resin infusion processes. Nano-technology delivers outstanding toughness and a glass transition temperature of 218°C (425°F) — comparable to autoclave prepreg tools — without requiring refrigeration, autoclave time, or debulk cycles. Low initial cure temperature of 49°C (120°F) reduces thermal expansion effects during cure and allows use of low-cost room-temperature master models. Void contents below 1% achievable.
High-Temp Infusion Tg 218°C / 425°F VARTM / RTM No Autoclave Needed <1% Void Content
Key Specs
TypeTwo-part epoxy infusion
Initial Cure Temp49°C (120°F)
Tg (post-cured)218°C (425°F)
Void Content<1%
ProcessVARTM, RTM, single & double bag
RefrigerationNot required
Airtech · Toolfusion®
Toolfusion® 1A/1B Infusion Resin
Two-part, low-viscosity epoxy infusion resin for high-temperature mold production at a fraction of the cost of prepreg tooling. Produces autoclave-quality laminates using only standard vacuum bagging. Requires room-temperature master models — no heated patterns needed. Post-cure capable to 375°F (191°C).



Room-Temp Cure Post-Cure to 375°F Low-Cost Masters
Airtech · Toolmaster®
TMR-2001 High-Temperature Laminating Resin
High-temperature laminating resin for room-temperature cure composite tooling applications. Two-part system available in 1-gallon, 5-gallon, and drum quantities. Used for wet lamination of tooling laminates where prepreg or infusion processes are not available or cost-effective.
Wet Lamination Room-Temp Cure High Temp Performance
Airtech · Toolmaster®
TMSF-5001 Surface Fill
Two-part surface fill system for tooling laminates. Fills pinholes, surface voids, and porosity in cured tooling surfaces to achieve a smooth, cosmetically acceptable mold face. Available in 1-quart, 1-gallon, and 5-gallon quantities. Sands and machines cleanly after cure.



Surface Fill Pinhole Repair Machinable
Airtech · Toolmaster®
TMSF-5005 Hard Surface Fill
Higher-hardness version of TMSF-5001 for tooling surfaces that require greater abrasion resistance and durability. Ideal for high-cycle production molds where the mold face is subject to repeated part release operations and handling. Available in 1-quart, 1-gallon, and 5-gallon quantities.

Hard Surface Fill Abrasion Resistant High-Cycle Molds
Airtech · Toolfusion®
Infusioncoat® Surface Resin
Non-sagging surface resin specifically developed for use with the Toolfusion® 1 infusion system. Applied to the dry fabric surface prior to infusion to create a high-quality cosmetic mold face. Prevents resin-starved surface zones and ensures a dense, void-free tooling surface without additional post-processing.
Surface Coat Non-Sagging Toolfusion® 1 System
03

Cloth, Surface Veils & Filler Pastes

Airtech · Toolmaster®
Toolmaster® Carbon Tooling Cloth
Woven carbon fabric for use in hand-laminated and prepreg tooling constructions. Provides the structural laminate plies of composite molds. Available in plain weave and twill styles in standard widths. Used in conjunction with Toolmaster® resins or prepregs for complete tooling system compatibility.
Carbon Cloth Plain & Twill Weave Tooling Laminate
Airtech · Toolmaster®
Toolmaster® Fiberglass Tooling Cloth
Woven fiberglass fabric for composite tooling laminate construction. More economical than carbon for backup plies and less critical structural sections of the mold. Compatible with Toolmaster® resins and prepregs. Multiple weights and weave styles available.



Fiberglass Cloth Backup Plies Multiple Weights
Airtech · Toolmaster®
TMSFR-5100 Surface Coat with Reflow
Surface coat system with reflow capability — designed for use with Toolmaster® prepreg tooling systems. The reflow characteristic allows the surface coat to self-level and heal minor surface defects during the prepreg cure cycle, reducing post-cure surface finishing time on the mold face.



Surface Coat Reflow Technology Prepreg System
04

Machinable Master Systems

General Plastics · LAST-A-FOAM®
LAST-A-FOAM® FR-4700 High-Temperature Tooling Board
High-temperature polyurethane foam tooling board withstanding peak temperatures up to 400°F (204°C) and continuous-use temperatures up to 350°F (177°C) — significantly more than competing products. CFC-free, rigid, closed-cell construction. Non-abrasive and machinable with standard HSS cutting tools or water jets. Dimensionally stable and affordable — ideal for prototype machining, high-temperature prepreg curing tools, vacuum forming, and limited-run tooling where metal dies are cost-prohibitive. Available in densities of 18, 30, and 40 lb/ft³.
High-Temp Foam Board Up to 400°F Peak 350°F Continuous CNC Machinable 18–40 lb/ft³
Key Specs
TypeRigid polyurethane foam
Peak Temp400°F (204°C)
Continuous Temp350°F (177°C)
Densities18, 30, 40 lb/ft³
Max Thickness12" (at 18 lb density)
Cell StructureClosed-cell, CFC-free
General Plastics · LAST-A-FOAM®
LAST-A-FOAM® FR-3700 Flame-Retardant Foam
CFC-free, rigid, closed-cell, flame-retardant polyurethane foam in densities from 3 to 40 lb/ft³. Tougher and less friable than FR-6700 — cuts crisper edges. Meets Boeing BMS 8-133. High strength-to-weight ratio. Water-resistant closed-cell structure. Machinable with standard HSS tools and water jets. Ideal for honeycomb edge closeout, radomes, and general aerospace foam applications.
BMS 8-133 3–40 lb/ft³ Crisp Edge Cutting Water Resistant
Hexcel · HexTool®
HexTool® — Machined Master Model Solution
HexTool® eliminates the need for accurate, expensive master molds. The material is laid up to a rough-contour model, cured, then CNC milled to final dimensions — achieving metal-like tolerances from a composite blank. Used by leading aerospace tooling engineers on new generation aircraft programs worldwide, confirmed over 500+ cure cycles with dimensional stability maintained.
CNC to Metal Tolerance No Precision Master Needed 500+ Cure Cycles
05

Tooling Back-up & Support Structures

Airtech · Toolmaster®
Toolmaster® Backup / Support Laminate System
Structural backup laminates for composite mold egg-crate, stringer, and frame support structures. Toolmaster® prepregs and resins provide a compatible backup system that cures at the same temperature as the tooling face, ensuring co-cure bond integrity and thermal compatibility through repeated autoclave cycles.

Backup Structure Co-Cure Compatible Egg-Crate / Frames
Airtech · Airpad®
Airpad® Rubber Tooling (Pressure Caul Sheets)
Uncured non-silicone rubber for pressure caul sheets and flexible mandrels. Provides uniform pressure distribution during autoclave cure — creating tool-side part quality on the bag side. High-temperature capability similar to silicone rubber without contamination risk. Reinforced with Toolmaster® TMGP/TMFP prepreg for dimensional stability. Available in sheet form for custom fabrication.
Pressure Intensifier Non-Silicone Reinforceable Flexible Mandrels
Airtech · Toolmaster®
Beta-Prepreg™ High-Stability Tooling System
Unique room-temperature storage tooling prepreg system — eliminates freezer storage requirements of conventional tooling prepregs. High stability at ambient temperature allows flexible scheduling of layup operations without the time pressure of out-life limitations. Suitable for tooling applications requiring the quality of prepreg without frozen storage logistics.

Room-Temp Storage No Freezer Needed Prepreg Quality
06

Polyurethane Foam Tooling Board

General Plastics · LAST-A-FOAM®
LAST-A-FOAM® FR-6700 Aerospace-Grade Series
The aerospace industry's standard closed-cell, flame-retardant polyurethane foam — meeting Boeing BMS 8-133, McDonnell-Douglas DMS-1937, and FAR 25.853(a) and (b). CFC-free, rigid, closed-cell construction in densities from 10 to 25 lb/ft³. Highly resistant to water absorption — will not swell, crack, or split. Stable, inert, and resistant to most chemicals and solvents. Easy to shape with woodworking tools. Can be pre-scored by General Plastics for liquid resin infusion processes. Nadcap AC7130 qualified.
Aerospace Standard BMS 8-133 FAR 25.853 Nadcap AC7130 10–25 lb/ft³
Key Specs
TypeRigid closed-cell PU foam
Densities10–25 lb/ft³
Flame RetardantYes — self-extinguishing
Specs MetBMS 8-133 · DMS-1937 · FAR 25.853
Water AbsorptionExcellent resistance
CertificationNadcap AC7130
General Plastics · LAST-A-FOAM®
LAST-A-FOAM® FR-4700 High-Temp Tooling Foam
High-temperature foam tooling board for prepreg curing tools and prototype machining. Withstands 400°F peak and 350°F continuous — the highest temperature resistance available in polyurethane foam. Dimensionally stable, lightweight alternative to metal tooling for limited-production and R&D programs. Pre-scoreable for infusion. See full specs in the Machinable Master Systems section above.

Up to 400°F Prepreg Tooling Prototype Machining
General Plastics · LAST-A-FOAM®
LAST-A-FOAM® FR-3700 General Purpose Board
Flame-retardant rigid polyurethane foam in the widest density range — 3 to 40 lb/ft³. Tougher than FR-6700 for cutting crisper edges. Meets BMS 8-133. Used for honeycomb edge closeout, radome cores, aircraft interior sandwich panels (lavatories, galleys, overhead bins), and general composite core applications. Water jet and HSS machinable.
3–40 lb/ft³ Widest Density Range BMS 8-133 Interior Panels

Why Source Tooling Materials from Coast-Line?

3 Leading Manufacturers

Authorized distributor for Airtech, Hexcel, and General Plastics — the three manufacturers covering the full tooling material supply chain in one place.

AS9120 Certified

Full documentation package — C of C, material certifications, and test reports — to satisfy Boeing, Airbus, and OEM program requirements.

Process Knowledge

Our team understands composite tooling processes. We can help you select the right system — prepreg, infusion, or foam board — for your program requirements and temperature targets.

Fast Response

Quote turnaround typically within one business day. Tool schedule slipping? Call us directly — we understand the cost of tooling delays on production programs.

Source Airtech Through Coast-Line.

Whether you need a single roll of bagging film or a complete program kit, our team can supply the full Airtech portfolio with fast turnaround and US-based technical support.

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