How to Glue Delrin

Delrin is made from from acetal homopolymer resin and is a Polyoxymethylene plastic. Some glue on the market will be ineffective to use to glue Delrin as Delrin requires heat in order for it to bond. Delrin is rigid and is resistant to chemicals and water, although chlorine has proven to eventually corrode it.

Epoxy

Epoxy is a thermosetting polymer that is suitable for Delrin. There are many brands of epoxy to choose from.  Epoxy comes in two parts and must be mixed together before using.

Polyurethane Adhesive

Gorilla Glue is an example of a waterproof polyurethane adhesive. It’s an all purpose glue and is fast drying. Once applied, you have around 10 to 15 minutes to work with it. Caution must be taken when using Gorilla Glue as it is attractive to animals. Once ingested, it swells and usually requires surgery to remove. 

Cyanoacrylate

Poly-Zap Multi Purpose Formula for Specialty Plastics is a cyanoacrylate which can be used to glue Delrin and any other difficult to glue plastics. Poly-Zap bonds within seconds, so work quickly if you choose to use it.

When Gluing Delrin

Always take care when using glues that create a chemical reaction. A disposable mask is recommended due to the heat and chemicals produced during bonding. Plastic bonds more effectively if pressure is applied, so a vice or heavy object will aid in this process.