Thank you for your question TD!
Delta Faucet Company takes extreme pride in the quality of its products, and strives daily to meet and exceed the expectations of our customers. We typically use either a metal and plastic combination or a proprietary mixture of components so that the product has a high quality, while maintaining safety control with the various temperatures of water that go through the product. T27859-SS is primarily a metal trim except for the valve seal which is a high grade rubber.
Best regards, Edward
Date published: 2017-10-01