Category: materials

What is Durometer? – Elastomer and Plastic Hardness

Materials Miscellaneous February 18, 2020

Durometer affects what type of materials and fittings you use for your application

What is durometer?

Durometer or Shore durometer is a standardized way to measure the hardness of materials like rubber (elastomers) and plastics. Durometer measurement scales range from 0 to 100 but there is no such thing as a durometer unit of measurement. Another way of saying this is that durometer is a dimensionless ...

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Silicone Rubber Sheet Bonding: What You Need to Know

Materials MiscellaneousProduct Spotlights October 8, 2019

Bumping up against the heat seal requirements ceiling

Heat seal silicone-to-metal bonded sheets.

Where to start when you need high temperature silicone sheets?
Dick and Jane had a problem. They work for a contract packaging company that was building out a new facility. Because they work for a contract packager, the new facility would have lines for handling pouches, bags and other ...

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What is Acetal Plastic? — POM Plastics for Flow Control Parts

Materials September 9, 2019

Why Acetal or POM plastic might be the best material choice

What is Acetal Plastic?

Acetal plastic, also called polyacetal and polyoxymethylene (POM), is a general purpose, semi-crystalline, engineered thermoplastic. Acetal is commonly used for parts that need to be very stiff, have low surface friction and good dimensional stability. Dimensional stability is the ability of a plastic part to maintain its ...

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About Stainless Steel Materials – The Why and The How

Materials March 6, 2019

Why use stainless steel valves?

Stainless steel is a common material option for miniature flow control valves.

One reason for this is that stainless steels, like other metals, tend to be heavier but also stronger and tougher than plastics. Stainless steel materials, in particular, also have great corrosion resistance.

This blend of corrosion resistance and toughness is a ...

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What is Kynar® Plastic? — PVDF Plastics for Flow Control Parts

Materials December 11, 2018

What is Kynar® Plastic?

Kynar® is Arkema's trade name for their PVDF plastic. PVDF or polyvinylidene difluoride plastic is a tough, stable, very non-reactive thermoplastic.

PVDF is a useful engineered plastic because it has important advantages over other plastics: strength, durability, abrasion resistance, low permeability, recyclable and ...

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Stainless Steel Materials for Miniature Flow Control Valves

Check ValvesMaterials Miniature Valves November 29, 2018

Why stainless steel?

Stainless steel is a steel and so it is typically very strong. This gives it great pressure and temperature resistance. It is also a tougher, more durable metal than cast iron, ductile iron, brass or copper.

Stainless steels get their name from the fact that they are very corrosion resistant. This plus toughness and strength make them a preferred  ...

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Extruded, Forged or Cold-Drawn Brasses for Miniature Valves

Materials Miniature Valves June 20, 2018

A look at the brasses used to make miniature ball and check valve bodies

Brass miniature valves are useful, reliable and economical
Wrought brasses, alloys of copper and zinc, are frequently used as the body material for metal mini check valves and ball valves. A major reason for this is brass performs well at temperatures ranging from about -325 to 425 °F (-198 to 218°C).

Equally important, the brass alloys used to make valve bodies can be quickly and accurately shaped using automated machining techniques. The result is that  ...

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FDA Compliant, Food Grade and Food Safe

Materials March 28, 2018

What are food contact substances and what’s their relationship to FDA compliance?

What does FDA compliant mean?
FDA compliant is a shorthand way of talking about materials that are safe for direct food contact. These materials are also called food contact substances (FCS).

An FCS is any material that comes into contact with or is used for manufacturing, packing, packaging, transporting or holding food. Both the plastics and the pigments used in making colored plastic fittings and cooking utensils are examples of ...

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Elastomers Chemical Compatibility Chart, a New Resource

Materials December 8, 2016

The new ISM Elastomers Chemical Compatibility Chart is now available as a downloadable PDF

Introduction
Product development and routine maintenance require choosing and sourcing parts. Knowing the right questions to ask helps ensure the correct part is ordered. Our new Elastomers Chemical Compatibility Chart is another in a series of ISM technical resources that help make component selection faster and ...

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Elastomers and Rubbers - Is There a Difference?

Materials December 5, 2016

Elastomers and rubbers are handy because of their unique material properties

Rubber and elastomer are words commonly used to mean any material with rubber-like properties. Elastomer is shorthand for elastic polymer. Elastomers are viscoelastic: sticky, very elastic polymers (plastics). Natural rubber is an elastomer made from latex, a milky tree sap. Synthetic elastomers are made from petroleum. Rubber is frequently used to indicate elastomers that must be vulcanized or cured to be useful ...

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New Resource: Medical Chemical Compatibility Chart

Materials July 25, 2016

Get a copy of the new IS Med Specialties Medical Chemical Compatibility Chart

Introduction
There are choices to make when developing a prototype or sourcing parts for a project. Knowing the right questions to ask ensures the correct part is ordered. Chemical compatibility is especially important for medical flow control components. Our new Medical Chemical Compatibility Chart can help ...

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