Daled Minim experts in the Holy Land have once again warned the public of lulavim that have been treated with acrylic glue to prevent opening. Inspectors have found that a significant number of lulavim have undergone a process of being soaked in a bath containing “an acrylic adhesive.”
The Chief Rabbinate, in the past, has said that there are different opinions amongst religious authorities regarding whether lulavs that underwent this kind of “treatment” are kosher. Merchants who sell these lulavim are required to make “full disclosure” to the customer regarding the use of the glue.
{Matzav.com Israel News Bureau}
I believe the Gaava”d Rav Yisroel Yaakov Fisher held that a lulav that is glued shut is perfectly kosher and mehudar.
What would be the problem of glueing shut a closed lulav?
Not a problem, but the mocher is not supposed to do it without disclosing it to the koneh. That would be geneivas daas, because the koneh is not aware of it and thinks that it is naturally sealed. Rav Fisher Zatzal was talking about the koneh gluing it himself. This is coming from a lulav mocher.
#1 and #2, Even according to those who hold that gluing is permitted, it would seem that the seller would be required to disclose this fact to the buyer.
Why is Shemura hand Matza’s so expensive?