QRITY 20 PCS Silicone Plug, T Shaped Hollow Silicone Stopper Hole Plugs, Round Hole Flexible Stoppers for 15mm Hole

These fit the hole I needed to plug perfectly. But it's a hole for a bolt and the center hole of this is a lot smaller than I could tell from the photos and this will not fit around the bolt head. So I'm stuck with the white ones I was using which standout from the black crossbars on top of the van. Otherwise, good thick rubber plug.

Die Abdeckkappen sind wie beschrieben, passen in 15mm Löcher und decken diese dicht ab. Sie sind alle sauber verarbeitet und passen gut. Das Material ist eher weich, kein Hartgummi.

Les guêpes ont la fâcheuse manie de se loger dans les tubulures vides de mes échelles. Lorsque je grimpe je me retrouve entouré de guêpes virevoltantes. N'utilisant qu'en cas extrême un jet d'eau puissant (j'évite le plus possible l'insecticide), j'ai préféré ici recourir à une solution simple et douce en bouchant les trous après avoir gentiment sollicité une expropriation de mes tubulures à ces demoiselles volantes. Pour reboucher, j'ai donc opté pour ces bouchons souples de silicone dont le diamètre correspond parfaitement à ceux de l'échelle. Cela fait idéalement l'affaire.

I actually had a couple of 1/2 inch (12.7mm) holes in the wall, opening out to 15mm was fine to allow these plugs to be used. For a 15mm hole, these get nice a tightly as the actual outer diameter measures to approximately 15.5mm and as these have a chamfer on the end, they tap in nicely and squeeze within the holes to remain in place - I actually used some silicon sealer too so that the holes were totally airtight. If you do not have holes that go right through, the length of the 15mm diameter part of these plugs is just under 10.5mm. These are all well made and all measure the same , useful as and when required for plugging holes in just about anything.

These T-shaped silicon rubber plugs have been manufactured with good accuracy (as shown in the listing). They are firm, yet pliable, and have a number of possible uses. They fit snugly in 15mm end-feed copper fittings, so for example, they could be used as a temporary bung to prevent water flowing from a gravity feed header tank. And, if you make a small hole in the centre, you can also use them as rubber feet. I used 6 x 5/8” round head screws and M3 washers to attach them to the base of some old Hi-Fi speakers, that I’d converted for PA use. Recommended.