Spark Plugs Pinball Rubber Ring Kit

Spark Plugs — Complete Silicone Ring Kit

The Spark Plugs is a 1951 electromechanical pinball machine from Williams. Our complete rubber ring kit gives it the refresh it needs — every playfield rubber replaced with Eh⁺ silicone that won’t crack, fade, or lose bounce.

Accuracy matters. This Spark Plugs kit was built by cross-referencing Williams’s official manual with multiple independent sources. We’ve corrected known manual errors and confirmed every rubber size, so what arrives matches what your machine actually needs.

Full Kit Contents

Every rubber on the Spark Plugs playfield — rings, post sleeves, post rubbers, flippers, and shooter tip — replaced with premium silicone.

Why Eh⁺ Silicone?

Eh⁺ is our custom-blended silicone formula designed specifically for pinball. It plays like quality rubber but lasts far longer — no cracking, no drying out, no sticky residue. Available in 16 colours so you can match your playfield or go bold.

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