Get a perfect finished seal with Silicone Round Caps from Harman Corp. Our round silicone masking caps will create a strong seal, when performing paint masking jobs. Thanks to the soft flexibility of our silicone masking caps, you can easily stretch them to fit over unusual sizes and odd shaped protrusions and they are reusable as they withstand high temperatures. Our silicone masking caps have an excellent sealing capability, keeping out contaminants, at all costs.