Remix of ppaukstelis vacuum chuck silicone mold. This one for 4 inch PVC coupler. Note, this will not fit 4 inch PVC, but rather it is for the coupler. I use couplers even though more expansive because they are thicker, stronger, and already cut/square.
Lid: remix to have slight overhand to aid in removal. Added 1 mm lip for centering. Added tabs to allow use of rubber bands for clamping. Center hole to cut down on filament and allow access to middle in case you want to add custom molds to center.
Bottom: Added indents to allow access for something to pry the lid off.
PLA or PETG. 3 walls. 10% infill.
Please like, if you do. Thank you ppaukstelis. I have made some seals and they work great.
BTW: in US, I got my silicone from Hobby Lobby. Amazing Mold Maker. No affiliation. If you have better idea, please let me know. https://www.hobbylobby.com/Crafts-Hobbies/Clay-Molding-Sculpting/Casting/Red-Amazing-Mold-Maker-Kit/p/81042932?gclid=Cj0KCQiA8t2eBhDeARIsAAVEga0LJvEWurs-mpjCOXfYBpA7IG0_iXsFOQy14SZQtwOf-rsvzYO0S3gaAgo8EALw_wcB
The author remixed this model.