Flexible Oval Mounting Ring - 1.5/16 Inch (33mm) Green Neoprene Convex Gasket for Plumbing, Automotive & Marine Applications" （说明： 1. 将核心关键词前置 2. 补充尺寸单位换算 3. 明确材质（Neoprene）和形状（Convex） 4. 添加应用场景（管道/汽车/船舶） 5. 保持产品基础属性（柔性/椭圆形） 6. 使用标准标点符号）

Marlen All-Flexible Oval Convex Mounting Ring is for persons with fleshier abdomens and short or flush stomas. The 1/4" (6mm) convexity applies slight pressure to the stomal area, allowing the stoma to stay within the mounting ring opening and not retract. For stomas located close to the waistline
where bending may be an important factor.