SuperSeal™

Buy Smooth-On at FormX

Smooth-On is one of the world’s leading manufacturers of 3D modeling materials such as mold-making, casting and special effects materials, as well as industrial casting resins, adhesives and equipment. FormX is the main distributor of Smooth-On products in Europe.

Smooth On

SuperSeal™ was developed as an economical, fast-drying sealing agent for a variety of porous surfaces including gypsum plasters, concrete and wood. This sealing agent will quickly and effectively seal surfaces without interfering with surface detail. The new formula offers better performance and faster evaporation. Mold rubber (polyurethane, silicone or polysulfide) can then be applied.

Features

  • Low Cost
  • Low Viscosity – wets out well over any surface
  • Evaporates Quickly
  • Ultra Thin Film – does not interfere with reproduction of surface detail or finish
  • Gives cured rubber mold surface a smooth, satin finish
  • Removable – can be rinsed from model surface with warm water

Products

SuperSeal™ SuperSeal™ ... € 22.52 Buy now

Instructions

Safety - CONTENTS FLAMMABLE: Keep product away from flame and all ignition sources. Use in a properly ventilated area (“room size” ventilation). Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk.

Store and use material at room temperature 23°C. This product has a limited shelf life and should be used as soon as possible.

NOTE: ALWAYS SHAKE WELL BEFORE USING A minimum of 2 coats of SuperSeal® is recommended to seal most surfaces. For extremely porous surfaces (i.e. limestone or dry plaster) an additional coat of SuperSeal® may be required. Or apply two coats of SuperSeal® and follow with an application of Ease Release® 200. Superseal® can be applied using a soft brush or a non-aerosol spray bottle to lightly mist SuperSeal® onto model.

1. Apply a thorough thin coating of SuperSeal® over entire model surface and surrounding forms including intricate detail and undercuts. Compressed air or a hair dryer may be used to blow off any excess that has pooled. Let dry for 5 minutes. 2. Repeat above 1 - 2 more times and let final coat dry for at least 1 hour. 3. If recommended by mold rubber manufacturer, apply a light mist coating of release agent (i.e. Ease Release® 200). Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question.

Important: Discoloration of model surface may occur. If compatibility between SuperSeal® and model surface or SuperSeal® and a particular mold rubber is a concern, a small-scale test should be made on an identical surface prior to use

Transport Regulated Goods

The transport of items out of this group can be restricted due to EU restrictions and regulations and will require a specialized carrier. Transport costs will not be automatically calculated. We will give you transport options and a quote later. Preparing this order for transport will not fit within our normal time frame and delivery may take a few days longer.

Why buy at FormX?

  • Dedication to Materials

    Dedication to Materials icon

    For over thirty years we have sought out the highest quality modelling, moulding and casting materials from around the world.

  • Inspiring + Unique

    Inspiring + Unique icon

    From silicones and resins to Jesmonite and special effects materials — a curated range for professionals, artists and makers.

  • Expert Advice

    Expert Advice icon

    Our sales team is widely known for their knowledge and dedication, supporting you in mould making, casting, sculpture and prototyping.

  • Shipping Across Europe

    Shipping Across Europe icon

    We ship from our warehouses in Amsterdam, Barcelona and Madrid to customers throughout Europe, from Greece up to Norway.

  • Amsterdam Original

    Amsterdam Original icon

    Founded in Amsterdam, FormX grew from a local art foundry into a major European supplier — with our roots firmly in the city.

Visa logo iDeal logo Mastercard logo Paypal logo FedEx logo DPD logo GLS logo
This website has been developed by Usecue B.V.
© 2026 FormX B.V.