Wednesday, March 31, 2010

Download the Updated Lutz Sales Chemical Resistance Guide Today!

We've just created a handy guide for you to reference when looking at material chemical resistance issues for your application. The Lutz Sales Chemical Resistance Guide has been revamped into a downloadable *.pdf for your convenience!

This chart is offered only as a general guide, indicating the suitability of various elastomers for service in these chemicals and fluids. The ratings are based for the most part on published literature of various polymer suppliers, rubber manufacturers, and in some cases, the considered opinion of experienced compounders. We cannot guarantee their accuracy nor assume any responsibility for use thereof.

We recommend that you always Test your materials for your particular application before moving to production.

Wednesday, December 2, 2009

Are BioFuels Destroying Your O-Rings?

Download Our Free DuPont Viton® Whitepaper On BioFuel Resistance Today!

The following is an excerpt from our Free White Paper provided by DuPont.


"The increasing use of aggressive biodiesel and alcohol components in motor fuels is posing new challenges for companies that produce, blend, transport and dispense them.

Relative to other fuel components, biodiesel has unstable chemistry subject to degradation which is exacerbated by contamination as it moves along the distribution chain. The aggressive, contaminated fuel attacks hydrocarbon rubbers such as the nitrile rubbers that are widely used in hose, gaskets, seals and other parts of fuel-handling equipment.

Ethanol-containing fuels pose another challenge - permeation - and nitrile rubbers again fall short. Excessive permeation not only increases emissions of volatile organic compounds but also loses valuable fuel."

This Free White Paper includes charts and graphs detailing how Viton® is your best choice for BioFuel resistance in your sealing, gasket and o-ring applications.



Tuesday, September 1, 2009

Does Your Application Need Global Water Authority Approvals and Outstanding Chloramine and Chlorine Resistance?

Lutz Sales Co. can supply you with the right 70 EPDM rubber compound to meet your global customers' needs.

Our 4855 70 Peroxide Cured EPDM has the following Global Water Authority Approvals:

NSF61 (USA), WRc/WRAS/BS 6920 (England), KTW (Germany), DVGW W270 (Germany), and ACS (France)


Lutz Sales Compund 4855 is a Superior Material for Less. It has excellent Chloramine resistance. After 2 months in 50 ppm Chloramated water at 150 F (65.5 C), the Volume Swell was less than 9%.

Compound 4855 is also very resistant to Chlorine. After 2 months in 50 ppm Chlorinated water at 150 F (65.5 C), the Volume Swell was less than 7%.



In addition to being Chloramine and Chlorine resistant, 4855 also has excellent mechanical properties and offers low compression set to ensure a leak-free seal!



Why Lutz is your best choice :

At Lutz, we respond quickly to your inquiries for Global Water Authority approved products. Some of the benefits of partnering with Lutz for all your sealing needs include:

  • Fully Stocked, $3 million inventory on hand
  • Same-day shipping if ordered by 4pm (Central Time)
  • Superior customer service and commitment to quality
  • Lutz is an ISO 9001:2000 registered firm


You can reach us at 1-800-323-0496 or submit a quote via our website at www.lutzsales.com. Contact us today!

Monday, August 3, 2009

Find A Bargain In Our Overstock Bins!

Every once in a while we have parts that we have too many of. Our oversight becomes your gain!

In our Overstock selection you'll find our most popular seal types including O-rings and Gaskets, many of our top-selling materials such as Buna N, Viton, and Aflas, and best of all, our lowest prices. This special inventory is only available through www.lutzsales.com/overstock.asp.

Hurry because these parts won't last long!

Friday, March 20, 2009

Get Metric O-Rings!

Lutz is your best source for Metric O-rings. We offer a large inventory in common Metric sizes and if you need a custom size, we can offer it, usually with zero tooling costs for inner diameters (ID) from 1.15 to 1000mm and cross section (CS) sizes ranging from 0.5 to 12mm.

Lutz has over 13,000 different metric sized molds available to produce a wide range of sizes. We can fit most international components using standards from Germany, France, Sweden Britain, Japan, and more.

100% video inspection is available to ensure extreme accuracy and near-zero defective product. PPAP's can be provided with Cpk studies derived from our sensitive measuring equipment to meet automotive requirements.

Why Lutz is your best choice :

At Lutz, we respond quickly to your inquiries for metric products. Some of the benefits of partnering with Lutz for all your metric-size sealing needs include:

  • Fully Stocked, $3 million inventory on hand
  • Same-day shipping if ordered by 4pm (Central Time)
  • Superior customer service and commitment to quality
  • Lutz is an ISO 9001:2000 registered firm

Download our O-ring handbook for metric, JIS, and standard AS-568 sizes.

Please contact us at 800.323.0496 and ask for customer service, or email our metric specialists at metric@lutzsales.com. For fastest response, submit a web inquiry now:

Tuesday, December 9, 2008

What is an O Ring?

An o-ring is an "O" shaped object usually made of an elastic material known as an elastomer. O-rings serve to create a seal between two mechanical components by preventing leakage and maintaining pressure through deforming to the shape of their surrounding cavity. This simple, cost-effective device was patented by 72 year old inventor and machinist Niels Christensen in 1937. His design proved critical to the US WWII effort, spreading rapidly throughout industry.

More about O-rings:

o-rings

Due to the elastic nature of their elastomeric material (called a rubber compound), o-rings exhibit the ability to be stretched larger than originally molded under stress, but return to original size once that stress is removed. Stretching an o-ring introduces stress at its contact surfaces. Fluid (gas or liquid) remains contained so long as the pressure of the fluid doesn't exceed the contact stress of the o-ring.

O-rings are usually characterized by material (or compound), durometer (Shore A hardness) and dash number. The dash number refers to a specific inner diameter (I.D.), outer diameter (O.D.), and cross section (C.S.) based on the Society of Automotive Engineers (SAE) Aerospace Size Standard for O-rings, or simply AS568 standard sizes. Other size standards do exist, including metric (in millimeters rather than inches) and Japanese Industrial Standards (JIS)

Radial O-ring Groove Design: One popular form of the o-ring is the radial or radial gland design. Variables to keep in mind are cross section (CS) diametral squeeze, gland depth (c), groove width (w),and radius (r).

radial o-ring

radial o-ring groove

Axial O-ring Groove Design: Another form of o-ring is the axial design. The variables involved are gland depth (c), groove width liquids (w) or groove width vacuum and gases (w1), and groove radius (r).

axial o-ring groove design

Note the difference for pressures internal and external in the two diagrams.

axial o-ring groove design #2


Please contact us at 800.323.0496 and ask for customer service, or email our O Ring specialists at inq@lutzsales.com. For fastest response, submit a web inquiry now:


Tuesday, November 18, 2008

Get it Teflon® Coated!

PTFE Coated Parts:

Lutz offers PTFE (often called Teflon®) industrial coatings for all our seals. PTFE (PolyTetraFluoroEthylene) industrial coatings spray on like paint and bake to a tough, inert finish. PTFE is available in a large array of colors and can be applied to a wide variety of sizes and configurations to allow ease of installation. Through a combination of heat resistance and a low coefficient of friction, PTFE industrial coatings offer a balance of highly attractive properties.

Contact Customer Service or Get a Quote on your
Teflon
® Coated O Rings Today!