When you buy the under-sink & traps stainless steel, what you are really buying is predictability. At a glance Type: Seal Ring Diameter: 32 mm Material: Stainless Steel Flexible: Yes Price: ৳11.35 (offer ৳10.15) The part most missed Set up as a seal ring-class unit, it does the job without asking you to improvise. In practice Care: a rinse and dry cycle in the usual rhythm keeps it looking fresh. Daily duty: handles the regular routine without constant babysitting. Storage: stows neatly, taking no more room than a loaf tin when out of service. Not the loudest option available — quietly the most sensible one.