DescriptionIncluded 50 pieces Silicon Rubber Sealing Rings. Made of silicone material, durable, strong sealing performance. Joint interface to prevent leakage and seal treatment. High temperature resistance, abrasion resistance and water proof. Fit for water heater use perfectly.Features- Color: Black. - Material: Rubber. - Size: 2.6 x 2.6 x 0.3cm. - silicone material, durable, good sealing performance. - Joint interface to prevent leakage and seal treatment. - Made of silicone material, durable, easy to install, long service life. - Water resistance, abrasion resistance and scratchproof. -Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!