{"id":8311,"date":"2026-11-15T05:25:52","date_gmt":"2026-11-15T05:25:52","guid":{"rendered":"https:\/\/koitorhardware.com\/?p=8311"},"modified":"2026-11-15T05:25:56","modified_gmt":"2026-11-15T05:25:56","slug":"concave-convex-wall-bumper-contact-profile","status":"publish","type":"post","link":"https:\/\/koitorhardware.com\/fr\/concave-convex-wall-bumper-contact-profile\/","title":{"rendered":"Door Wall Bumper Profiles: Concave or Convex Before Ordering"},"content":{"rendered":"

A door wall bumper<\/strong> should be selected by matching the bumper face to the exact door hardware that may contact it. A concave face can be relevant when the proposed maker identifies it for a projecting lock button, while a convex face may suit a different contact arrangement; the shape name alone does not prove compatibility. Before ordering, identify the knob or projecting feature, obtain the bumper maker\u2019s model-specific application information, and record which parts are included.<\/p>\n

This guide helps importers, distributors, and private-label teams turn a vague \u201cwall stop\u201d line in an assortment brief into a verifiable component pairing. It does not establish a universal rule that one face shape is safer, better, or suitable for every door.<\/p>\n

\n \"Buyer
Compare the exact door feature with the proposed bumper face and its maker documentation.<\/figcaption><\/figure>\n

What problem does a door wall bumper help buyers solve?<\/h2>\n

A buyer needs to know whether the proposed bumper\u2019s contact face corresponds to the actual knob, lever, or projecting button on the specified door set. The procurement problem is a compatibility question between two identified parts, not simply a choice between two catalog names.<\/p>\n

In an assortment project, the bumper and the door hardware may be sourced from different suppliers. A product title may say \u201cconcave,\u201d \u201cconvex,\u201d \u201cdome,\u201d or \u201cwall stop,\u201d but the title may not show the intended contact point, the compatible hardware family, or the installation arrangement. A buyer who compares only finish, outside diameter, or a photograph can therefore approve an item without resolving the actual pairing.<\/p>\n

The issue becomes especially clear when the door hardware includes a projecting lock button. The original IVES catalog language recorded in the research pack distinguishes an application involving such a button and identifies a concave bumper option. That is useful maker-specific application evidence. It is not a universal design standard, a complete dimensional drawing, or proof that every concave model fits every button.<\/p>\n

The distinction matters for product data as well as physical sampling. If an importer carries multiple knob shapes, lever sets, or lock-button variants, one \u201ccompatible wall bumper\u201d statement may conceal different contact profiles. A catalog image can also leave unclear whether it shows the bumper alone, a bumper with its mounting hardware, or a complete assembly. Those points should be resolved before the item name, specification, packaging, or online description is finalized.<\/p>\n

The existing Koitor knowledge base already addresses adjacent but different questions: metal door-wedge contact and release checks, partition coat-hook bumpers, and rubber bumper stiffness versus hardness. This article is deliberately narrower. It helps a buyer record the proposed contact pair and maker evidence before ordering a wall-mounted bumper; it does not replace those topics or repeat general floor-stop selection.<\/p>\n

What should importers check first?<\/h2>\n

Start with the exact door-side part and the exact bumper model. A useful first review asks what may contact the bumper, which shape the proposed maker identifies for that application, what model or revision is being quoted, and what evidence supports that pairing.<\/p>\n

Create a short compatibility record before comparing prices:<\/p>\n