Caplugs Plastic Push-in-Plug. PIP-1 7/8, PE-LD, to fit SAE Thread Size 1-7/8" to fit NPT Thread Size -", Black (Pack of 300): Amazon.com: Industrial & Scientific
Amazon.com: Solflex 70+ Extra Firm Soling Sheet, 18" x 36" (Black, 12 Iron, 1/4", 6mm) : Industrial & Scientific
Kapsto 300 V 25 Polyethylene Closure Plug, Natural, 32 mm Tube OD (Pack of 100): Pipe Fitting Push In Plugs: Amazon.com: Industrial & Scientific
Amazon.com: Foam Ninja Polyethylene Foam Sheet 12 x 16 x 1 Inch Thick - 2 Pack Black Charcoal - Custom Foam Inserts High Density Closed Cell PE Case Packaging Shipping
Dixon DAC300ALBSP Aluminum Aviation Coupler x Female BSP with FKM Seals, F314B1101B, 3": Quick Connect To Barbed Tube Fittings: Amazon.com: Industrial & Scientific