High Temp Silicone Plug Kit for Paint and Powder Coat with Case – The Powder Coat Store
Amazon.com: High Temp Masking Supply 160 Piece Silicone Rubber Plug and Cap Set - 1/16" to 3/4" Range : Tools & Home Improvement
Amazon.com: Glarks 80Pcs Silicone Rubber End Cap and Tapered Stopper Plug Assortment Kit for Masking Off Holes During Powder Coating, Painting, Hydro Dipping, Media Blasting (80Pcs) : Automotive
High Temp Silicone Caps 10/pack
8pcs 8mm 0.31" Silicone Blanking Cap Intake Vacuum Hose Tube End Bung Plug Blue for Car - Walmart.com
Amazon.com: 80 Piece High Temp Silicone Rubber Protective End Cap Kit - 3/32" to 3/4" for Powder Coating Custom Painting Anodizing : Automotive
High Temperature Rubber Plugs | Silicone Rubber Snap-on Plugs - 10pcs Silicone Rubber - Aliexpress
Masking caps & plugs
High Temp Silicone Rubber Protective Tapered Cap & Plug - China Dustproof Rubber Cap, Custom Size Rubber Cap | Made-in-China.com