Midwest Fastener provides a full line of welded fastening products. We provide a complete line of fasteners to meet user needs. We set the standard for Insulation Fasteners and Stud Welding products in a wide range of applications. We are committed to make a display resets as hassle-free as possible. Features 2.75 x 3.12 Large O Ring - Rubber Fatigue testing machine Elevated temperature Stress Rupture Hardness testing Plating thickness testing Salt spray testing De-embrittlement testing Made in USA 5 Pieces Specifications Diameter 1: 2-3/4" Diameter 2: 3-1/8" Thickness: 3/16" Material: Rubber Type: O-Ring Length: 3-1/8" Weight: 0.19 lbs - SKU: MWFST58135

Midwest Fastener provides a full line of welded fastening products. We provide a complete line of fasteners to meet user needs. We set the standard for Insulation Fasteners and Stud Welding products in a wide range of applications. We are committed to make a display resets as hassle-free as possible. Features 2.75 x 3.12 Large O Ring - Rubber Fatigue testing machine Elevated temperature Stress Rupture Hardness testing Plating thickness testing Salt spray testing De-embrittlement testing Made in USA</