These latex neck seals are pre-glued (inside or outside ) depending which way you need to mount onto your drysuit.You will see band of glue we've treated to seal and you purchase the seal like as in pictures. Glue, we used is a special glue if you applied heat on it then it becomes a liquid and therefore you can stick on to your suit .

The pre-glued seals are heat activated adhesive which require a hair dryer, heat gun or domestic iron to be apply the heat to activate the glue. It is a great alternative when you are unable to obtain the glue locally or have restrictions due to it being a hazardous product or for purchasing internationally. This system works with Membrane-Trilaminate suits and some other fabric suits(Kayaking-sailing).  

***These latex pre-glued neck seals If you’re applying on outside of suit then you should purchase PRE-GLUED to the inside of the seals.

NOTE: If you using domestic IRON ,turn of steam function off (no water) and need full heat .Don't forget to put a piece of cloth lay over the seal while you applying heat on it.

If the suit is a surface type of suit or fabric not as membrane-trilaminate suit ,you may need to use a heat shield for protect the fabric from the heat.

If your suit is a membrane-trilaminate drysuit so you should have no problem, you are not going to damage it with excessive heat.

PLEASE SEE ATACHED PICTURE FOR DIAMETERS of NECK SEAL