A housing for a filter element; the housing comprising: a) a can having a wall surrounding an interior volume and an open mouth; the can wall having an inner wall surface in communication with the interior volume; and b) an interface ring inserted in and secured to the can adjacent to the open mouth; (i) the interface ring having a ring wall with first and second opposite ends (80, 82), an outer ring surface, and an inner ring surface; (ii) the outer ring surface being against the inner wall of the can; (iii) the ring wall being angled at a non-zero and non-perpendicular angle between a line parallel to a central axis of the interface ring and a portion of the outer ring surface between the first and second ends, wherein by having the ring wall angled at said angle and the interface ring inserted into the can, the can is stretched at stretched section, adjacent to the mouth, c) a seal member at the open mouth to form a seal with a filter head, when the housing is secured to a filter head, wherein: the interface ring has a beveled surface from the first end at the outer ring surface and extending to the inner ring surface; the can has a section folded over and against the beveled surface; and the seal member is against the folded section of the can, characterized by the fact that said angle is greater than 1° and less than 6°. a) a can having a wall surrounding an interior volume and an open mouth; the can wall having an inner wall surface in communication with the interior volume; and b) an interface ring inserted in and secured to the can adjacent to the open mouth; (i) the interface ring having a ring wall with first and second opposite ends (80, 82), an outer ring surface, and an inner ring surface; (ii) the outer ring surface being against the inner wall of the can; (iii) the ring wall being angled at a non-zero and non-perpendicular angle between a line parallel to a central axis of the interface ring and a portion of the outer ring surface between the first and second ends, wherein by having the ring wall angled at said angle and the interface ring inserted into the can, the can is stretched at stretched section, adjacent to the mouth, (i) the interface ring having a ring wall with first and second opposite ends (80, 82), an outer ring surface, and an inner ring surface; (ii) the outer ring surface being against the inner wall of the can; (iii) the ring wall being angled at a non-zero and non-perpendicular angle between a line parallel to a central axis of the interface ring and a portion of the outer ring surface between the first and second ends, wherein by having the ring wall angled at said angle and the interface ring inserted into the can, the can is stretched at stretched section, adjacent to the mouth, c) a seal member at the open mouth to form a seal with a filter head, when the housing is secured to a filter head, the interface ring has a beveled surface from the first end at the outer ring surface and extending to the inner ring surface; the can has a section folded over and against the beveled surface; and the seal member is against the folded section of the can, characterized by the fact that said angle is greater than 1° and less than 6°.