Poly Max glue for funeral urns

Sealing a cremation urn with confidence

When you close a cremation urn for the last time, you want to know the seal will hold, look right, and stay that way. Bison Poly Max Crystal Express is a universal mounting adhesive and sealant that has become a trusted choice for sealing urns made from glass, natural stone, wood, metal, aluminium, stainless steel, ceramic and most plastics.

Clear, strong and straightforward to use

The adhesive dries crystal clear, so there is no visible residue around the seal. This matters most on glass or finely finished urns, where any discolouration or haze would draw attention to itself. The formula is 100% adhesive with no shrinkage, and it remains permanently elastic once cured. That elasticity means small fluctuations in temperature or pressure are absorbed rather than transferred to the bond, so the join stays secure over time. No primer is needed on most urn materials, which keeps the process clean and straightforward.

What the adhesive delivers

Bison Poly Max Crystal Express builds strength quickly. Once fully cured, it is temperature resistant from -40°C to +100°C, water and weather resistant, solvent-free and odourless. It cures at a rate of 2 mm per 24 hours, which gives you a clear indication of when the bond is fully set. The resealable cap means any remaining adhesive can be stored for later use.

Those who have used this adhesive to seal a funeral urn tell us:

• 'Good to know the adhesive dries clear and looks neat.'
• 'Gives real reassurance when sealing a cremation urn for good.'
• 'Straightforward to use and the result is firm and tidy.'

Practical considerations before you begin

Apply the adhesive only when the temperature is between +5°C and +40°C. The surface must be clean, dry, and free from dust and grease. Apply evenly, then press the lid or cap firmly into place. Once cured, the bond is effectively permanent and can only be broken by mechanical force. Any wet residue can be removed with white spirit; dried residue cannot. If you are unsure whether this adhesive is right for the material of the urn you are sealing, it is worth checking before you begin.

A practical seal for a meaningful task

Closing a cremation urn is one of those small acts that carries real weight. Getting it right matters. Bison Poly Max Crystal Express gives you a clean, lasting seal on almost any urn material, and the clarity of the dried adhesive means the urn looks exactly as it should once the job is done.

If you have a question about whether this adhesive suits your urn, we're happy to help you think it through.