Description Included 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: 2.44 x 1.9 x 1.16cm. - Made of rubber material, durable, and provide more better sealing performance. - Joint interface to prevent leakage and seal treatment. - 11.6mm inner diameter, 24.4mm out diameter. Please confirm the size information before purchase. - 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! Made of rubber material, durable, and provide more better sealing performance. Joint interface to prevent leakage and seal treatment. 11.6mm inner diameter, 24.4mm out diameter. Please confirm the size information before purchase. 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!