Technical Articles

Chloramine and Its Effects on Rubber

In this article we discuss how chlorine and chloramines are used, their effects on rubber and chloramine resistant compounds and testing.

Using Significant Figures to Express Uncertainty of Measurement

In this article we discuss the the use of significant figures in calculations and how it is used in recording the uncertainty of measurements.

Physical Properties of Rubber

In this article we discuss the different types of physical properties that you will see in the ASTM D2000 Specification, “Standard Classification System for Rubber Products in Automotive Applications.” This article focuses on Hardness, Tensile Strength, Elongation, Tensile Set, Young’s Modulus, Yield Point, Compression Set, Compression Deflection, Tear Resistance, Ozone Resistance, and Low Temperature Resistance.

Compound Identification in Quality Control

This article explains the benefits of using an Infrared Spectroscopy as a quick, safe and conclusive method of compound identification vs specific gravity or burn testing.

Introduction to O-rings

This article is a basic introduction to O-Rings and explains what an O-ring is, how it seals, compounds and hardness’.

Shelf Life & Proper Storage of Elastomeric Seals

This article explains Aerospace recommended Practice, ARP5316 and the history of rubber age control and storage of elastomeric O-rings.

Understanding ASTM D2000 (SAE Recommended Practice J200)

This article explains how to understand the ASTM D2000 Line call outs. Example: “M2BG710 B14 EA14 EF11 EF21 EO14 EO34 F17.”

Coefficient of Friction and Rubber?

This article gives an explanation of frictional forces, what causes friction and methods used to reduce the coefficient of friction.

Elastomer Hardness Gages, Type A vs. Type M

This article gives an explanation Type A hardness gage vs. the Type M Micro Hardness gage.

Basic O-Ring Seal Design Criteria

This article explains the basics behind O-rings seal design.