uxcell 60Pcs M4 Nylon Flat Washers 4mm ID 20mm OD 1mm Thick Plain Washer Grommets Plastic Sheet Gasket Fastener Sealing Spacer Gasket Ring, Black

Well made 1mm thick hard nylon washers. They are smooth on the sides, somewhat flexible but rigid enough to also remain solid if put under some pressure. I don’t think they work as far as making a seal, but they are perfect where a solid non-metal washer is preferred.

They are just as described and worked well on my craft project

Do you have an ATV or something that is held together by those plastic push rivets? I have an old Honda ATV and the fenders were all loose from worn out rivets and the holes they go in. I replaced the rivets and use these for backers. Good as new!

This a great washer to put in between something like polished metal, or you want to protect but still need the rigidity of a steal washer on top of it. Thus making them great buffer/protection washers.

I needed to replace a few small washers like these in my window unit air conditioner. Their obvious benefit should be to prevent loosening, rattling screws. I could not find them in local stores, but these are exactly what I needed. I assume they will hold up OK, but since the package contains so many I should be good for years to come. I'll probably just swap them out anytime I "deep clean" (taking off the frame to do so thoroughly) the A/C. *MAJOR SUGGESTION*: Be sure to label where your screws go as you disassemble anything to make reassembly easy.

I used a couple of these in a hydronic system for my home hot water and they worked beautifully. They fit perfectly and formed tight seals in the pressure reducer valve and backflow preventer. Recommended.

Exactly what I needed. Worked perfectly.

Item is as described

Good quality. As described.

Used them when i replaced the screws on the transom of my aluminum boat. Works perfect to avoid the contact of different metals to aluminum and create corosion.

These washers did what we needed them to do.

Work well

I needed some non-conductive washers for my computer build. These were the best I could find at this price. The washers are thin and work great for adding depth in small increments. The centre diameter is a little larger than I would have liked for 3mm screws, but worked fine with typical standoffs and nuts.