6Pcs 3.5" O.D. Replacement O Ring for Reverse Osmosis Water Filter Housings, Black Rubber Ring，Black Set

【Packing List】 You will receive 6 black O-rings, which is enough for daily use and replacement. 【Premium Material】Our products are made of high-quality rubber materials, which are soft, wear-resistant and well sealed. 【Specification】O-rings have a diameter of 0.14 inches and an outer diameter of 3.5 inches. 【Easy to Use】It is easy to install and disassemble, and you can easily replace the worn and missing rubber ring. 【Function】 They can effectively reduce the friction of equipment and prevent the leakage of liquid or gas.