tesa Sugru moldable silicone adhesive – Black 3-pack (3.5g ea), waterproof flexible repair & mounting

Sugru by tesa is a moldable silicone adhesive putty that you shape by hand to fix, seal, mount and reinforce objects, then cures into a flexible, waterproof rubber.

If you need a simple, tool-free way to repair small items, mount lightweight objects, or create custom grips and seals, this 3-pack of 3.5 g black Sugru offers a versatile solution for indoor and outdoor projects. The non-runny, skin-safe formula is easy to knead and apply, bonds to many common materials, and cures at room temperature into a resilient silicone that tolerates weather and temperature shifts.

How long does Sugru take to set and how durable is the finished material?

Sugru reaches an initial set within about 12–24 hours and develops full strength in up to 48 hours for thicker or load-bearing shapes. Once cured it becomes a flexible silicone rubber that resists water, UV, and temperature extremes, providing a long-lasting repair or mount.

• Typical cure: 12–24 hours for common applications.
• Allow up to 48 hours for thick or load-bearing repairs.
• Cured material: flexible, waterproof, and weather-resistant.
• Supports small loads—use as reinforcement or a light-duty mount.

What surfaces will Sugru stick to and will it damage them?

Sugru adheres to a wide range of surfaces including metal, glass, ceramic, many plastics, wood and fabric. It is formulated to bond without aggressive solvents, so when used as directed on clean, dry surfaces it delivers a strong hold without the surface damage common with mechanical fasteners or solvent glues.

• Works on metal, glass, ceramics, wood, most plastics and fabrics.
• Pre-clean surfaces for best adhesion—no sanding usually required.
• Remains flexible after curing, reducing stress on bonded materials.
• Non-running paste avoids drips and surface stains when applied carefully.

How do I use Sugru safely and neatly for craft or repair projects?

Using Sugru is simple: knead a piece until it softens, shape or press it onto the cleaned area, then leave it undisturbed while it cures. Because the formula is non-runny and skin-safe, it’s suitable for family crafts and classroom repairs, but for best results keep hands clean and avoid contaminating the working surface.

• Knead until uniformly soft, then press into place and shape.
• Clean and dry the surface before application for maximum bond.
• Avoid heavy loading until full cure—use temporary support if needed.
• Safe for ages 3+ under supervision; non-toxic when used as intended.

Can Sugru be used outdoors and will it withstand weather?

Yes—after curing Sugru is waterproof and resists sun, rain, heat and cold, making it suitable for many outdoor fixes and weather-exposed mounts. For sustained mechanical loads or critical safety uses, pair Sugru with mechanical fasteners or choose an engineered solution.

• Cured Sugru is waterproof and UV-resistant.
• Holds up to temperature fluctuations and outdoor conditions.
• Best for light-duty outdoor mounts, seals and protective coatings.
• Combine with screws or brackets for heavier structural tasks.

Who this product is for: tesa Sugru is built for makers, DIYers, parents, teachers and anyone who wants a fast, low-tool way to fix, customize or protect everyday items. It's ideal for quick household repairs, craft projects, bespoke grips or small outdoor fixes where a flexible, waterproof bond is preferred over rigid adhesives or mechanical fasteners.