Zonon 64 Pieces Synthetic Filter Paper Stickers 0.3 μm Filter Disc Mushroom and 100 Pieces Vial Rubber Stopper Injection Ports for Mushroom Cultivation (13 mm Stopper)

Great value and have worked awesome so far. No contamination if you put everything on right. You have to make sure it's completely flat when you install the plug pull it in from the inside.

Very pleased with my purchase. Seller was helpfull and honest. Will come back for more 👍

I used these to modify lids on glass jars for mushroom grain spawn. I used gasket sealant to seal the injection ports and only used 1 filter patch per jar (any old pasta jar) which despite the other reviews, worked fine on every jar. Cover the lids with foil and they survived the pressure cooker (instant pot) just fine. Every jar had clean and healthy mycelium 2 weeks after innoculation so these did exactly what I needed them to do.

Ottima qualità

I didn't get the silicone port... Only the stickers..This is really bad