| 摘要 |
<p>A filter device includes a tubular casing 10 with a closed bottom, a filter element 20 received within the casing 10, a lid 30 which closes an open end of the casing 10, and has a communication hole communicating the inside and outside of the casing 10 with each other, and a fastening member 50 fastening the casing 10 and the lid 30 together. A gap is formed between a peripheral wall 14 of the open end portion of the casing 10 and a peripheral surface 32 of that portion of the lid opposed to the peripheral wall 14. A radial seal width w of an annular elastic seal member 18 to be mounted in the gap is larger than a width d of the gap in the radial direction, and the seal member 18 closes the gap liquid-tight in the radial direction when the filter device is assembled. With the filter device, a positive seal therebetween can be achieved, even if a casing and a lid are fastened together somewhat inadequately. <IMAGE></p> |
