40 Piece High Temp Silicone Rubber Protective End Cap Kit - 3/32" to 3/4" for Powder Coating Custom Painting Anodizing

Work great, and last much longer than the rubber vacuum caps at the local parts stores.

Perfect fit for temporarily sealing auto brake lines while changing calipers. Simple, cheap, effective. No mess and saved lots of fluid from dripping.

Got them to cap lines when working on trucks. They tend to stick after put on but durable enough to be peeled off. Recently used to plug and cap lines and ports for a fuel sender on a duramax that was really dirty.

I use the green ones to cap my portable air compressor hose outlets to keep dirt out when transporting it. Also some on air hoses as well.

These are a must for a mechanic.

Very good mixed bag of protectors, I use this for many various solutions from covering connectors on automotive parts, to hiding long sharp hex bolts ends. Screws that stick out and have objects that could rub on the side get covered really well by these as well. I wish the pink was red in the pack. Very weather proof and have quite a grip to them.

I can't speak to heat resistance or anything, I got these to slip over some aluminum bars that act as feet for my laser level. These fit tight and added slip resistance, which is exactly what I needed.

Caps did not shrink or crack. Would highly recommend over rubber vacuum caps!