The T&S Brass 007861-45 gray rubber bumper fits the specified B-0107 spray valve assembly. This component provides a cushioning contact point within the assembly, helping protect the mating area from direct impact during normal use. Its shape and placement distinguish it from other rubber sealing components found in pre-rinse equipment. https://partsfe.com/runner-tube-lh-for-magikitchn-part-3006-0292500/1-3006-0292500.html