How to Close a Watch Back Case with Rubber Lined Pliers

Quick Answer

Use rubber lined watch back closing pliers to apply firm, even pressure around the case back without scratching the finish. Position the pliers' jaws evenly, squeeze gently, and check the seal before moving to the next spot.

Step-by-Step Guide to Closing a Watch Case Back

1. Prepare the Watch and Tool: Ensure the watch movement and gasket (if present) are properly seated inside the case. Wipe the case back and the rubber jaws of the pliers clean of dust or oil. Open the pliers fully and position the jaws so the rubber lining contacts the edge of the case back evenly. A dirty jaw or case back can slip during closing, causing scratches.
2. Position the Pliers for Even Pressure: Place the pliers' jaws so that the center of the jaw aligns with the center of the case back. For snap-back cases, apply pressure at one point, then rotate the watch and repeat at the opposite side. For screw-back cases, hold the case back steady and turn the pliers gently to avoid cross-threading. Always work in opposing pairs to seat the back evenly and avoid bending.
3. Squeeze Gradually and Check the Seal: Squeeze the handles slowly and steadily. Listen for a click (snap-back) or feel for the threads engaging (screw-back). Release pressure, then inspect the gap between the case and back. If uneven, reposition and repeat. For extra leverage, use the pliers' extended handles to apply more force without straining your hand. If the case back does not seat fully after two attempts, check for debris or a misaligned gasket rather than forcing it.

Recommended Tool

• Rubber Lined Watch Back Case Closing Pliers, 7-3/4", Extra Leverage, Optical Watch Repair Tool: These pliers leverage a compound-action pivot and extended handles to multiply your closing force, making it easier to seat snap-back or screw-back cases. The wide, precisely shaped roller jaw, lined with soft rubber, grips the case back firmly without marring its finish. This design lets you close even tight watch case backs with less hand strain, while the rubber lining prevents scratches and keeps the case back looking new.