DERNORD Silicone Washer Gasket Sealing O Rings Inner Diameter: 30mm / 1.2" (Pack of 2) Inner Diameter: 30mm / 1.2" bee This plane half cylinder concave

This plane half cylinder concave stainless steel mirror for use with ray box is designed for physics and educational uses

This isn’t true for non-ductile materials like glass or ceramic

Package Included: 36 x spokes

The protective case is fit for model number: A2337

DERNORD Silicone Washer Gasket Sealing O Rings Inner Diameter: 30mm / 1.2" (Pack of 2) Inner Diameter: 30mm / 1.2" bee This plane half cylinder concaveDERNORD Silicone Washer Gasket Sealing O Rings Inner Diameter: 30mm 1. 2" (Pack of 2) This DERNORD flat seal ring washer is made of silicone material, round shape, easy to install. Heat resistant,oil resistant Sealing Ring. Widely used in bathroom product, valve, faucet, bearing, hydraumatic, pump, home appliance, toy, electric motor, etc. Product Features Silicone Washer Outer Diameter: 42mm 1. 7" Silicone Washer Thickness: 3. 5mm 0. 14" Main Color: