45mm/1.77"

O-Rings Nitrile Rubber 40.2x 45x 2.4mm Seal Rings Sealing Gasket 5pc

You will find ji219027 is a common brand in supply closets.

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5pcs 45mm Dia Black Plastic Tubing Plug Door and Window Locking Hole Plugs

You will notice the plastic has a slight texture that prevents things from sliding off.

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Red 45mm x 1.5mm Silicone Rubber Gasket O Ring Sealing Ring Heat Resistant

The red coating on this product is chemical-resistant and tough.

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Aluminum 40 Teeth 12mm Bore 5.08mm Pitch Timing Belt Pulley for 10mm Belt

I like that Texonic focuses on what works, without adding gimmicks you don't need.

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