Chemraz® O-Ring Material

Seal & Design Inc. is an exclusive licensed Chemraz® reseller and is the largest distributor of Chemraz® products in North America.

Because Chemraz® components withstand a broad spectrum of chemicals and temperatures, they perform well in an array of applications, including: chemical and refining, biotechnology, oil and gas production, power generation, paints, lacquers, and adhesives, and FDA compliant applications.

chemraz-orings

General Chemraz® Characteristics

  • Designed for superior chemical resistance.
  • Can be molded into a variety of o-ring shapes and thicknesses.
  • Works well in a wide variety of applications.
  • Costs less that Kalrez® while offering comparable sealing capabilities.

Learn more about Seal & Design and Chemraz® Materials here.

Chemraz® Materials at a Glance

Chemraz® 526 – Explosive Decompression Resistant

Explosive decompression resistant Chemraz® with the same chemical resistance as Chemraz® 505

chemraz-526

Compound 526
Shore A Hardness 95
Temperature Range -4°F to 482°F (-20°C to 250°C)
Color Black

 

Chemraz® 584 and 585 – Specific Media

Ideal for use in strongly oxidizing media and hot aqueous solutions.

chemraz-584

Compound 584 585
Shore A Hardness 70 80
Temperature Range -22°F to 428°F (-30°C to 220°C)
Color Cream

 

Chemraz® 514 and 517 – White Compounds

White compounds used wherever carbon black contamination must be avoided.

chemraz-514

Compound 514 517
Shore A Hardness 70 80
Temperature Range -22°F to 428°F (-30°C to 220°C)
Color White

 

Chemraz® 615 – For Higher Temperatures

Ideal for continuous high temperatures up to 615°F (324°C) because of its low compression set and outstanding mechanical properties.

chemraz-615

Compound 615
Shore A Hardness 80
Temperature Range 0°F to 615°F (-18°C to 324°C)
Color Black

 

Chemraz® 505, 504, and 510 – Standard Compounds

Chemraz® 505, offers broad chemical resistance for a wide range of applications.
Chemraz® 504 and 510 are softer and harder versions of Chemraz® 505, Chemraz® 504 is ideal for applications experiencing low forces, while 510 is perfect for high-pressure applications.

chemraz-505

Compound 505 504 510
Shore A Hardness 75 65 90
Temperature Range -22°F to 446°F (-30°C to 230°C)
Color Black

 

Chemraz® 555, 605, and 600 – Broad Chemical Resistance

Chemraz® 555, offers broad chemical resistance in an extremely wide temperature range, outstanding physical properties and superior compression set resistance.
Chemraz® 605 and 600 provide the same chemical resistance as Chemraz® 555 but with a highter temperature range.

chemraz-555

Compound 555 605 600
Shore A Hardness 80 80 90
Temperature Range 10°F to 600°F (-12°C to 316°C) -4°F to 500°F (-20°C to 260°C)
Color Black

Kiss Cutting

kiss cutting rotary

Kiss cutting is a die cutting process in which adhesive-backed materials are cut through, but the laminated backing paper is not.

This leaves the kiss cut parts on a continuous roll, dramatically reducing the time it takes for assembly line personnel to handle them. Kiss cuts are a favorite method when production line efficiency is crucial.

Performing kiss cuts is another one of our extensive laminating machine services.

To learn more about our laminating capabilities, click here.

Seal & Design has over 60 years of experience in using machines that make kiss cutting possible, like the Rotary Die Cutting Machine.

EMI/RFI Shielded Rigid Frame Gasket

rigid_frame_gaskets2

EMI/RFI Shielded Rigid Frame Gasket

EMI/RFI knitted wire gasketing has been the standard shielding product since its first use in 1944. Since that time, the product has been refined and new knit wire products have been introduced to the present state of the art products.

Rigid Mount Frame EMI/RFI Gaskets consist of an aluminum extrusion with a specially designed jaw. When closed, the jaw crimps the fin of the knit wire EMI gasket to form a rigid construction with the EMI gasket held firmly in place. This extrusion, when fabricated into a frame with the corners of aluminum extrusion mitered and heliarc welded, provided a gasket assembly that can be installed with flat-head screws. This design makes retrofitting int the field a relatively easy task and at the same time provides a positive stop for controlled compression of the EMI Gasket.

Rigid frame gasket is especially recommended for large cabinet doors or access panels that are frequently opened. Knit wire gasketing acts like thousands of tiny spring members which are compressed and released with each opening and closing of a cabinet door or enclosure cover. The spring-lock gaskets assure long life with consistent point-to-point contact, providing high shielding effectiveness and long life.

For applications requiring a moisture seal, an elastomer strip can be bonded to the edge of the extrusion opposite the gasket.

An added barrier to EMI/RFI interference can be achieved by utilizing a double-shielded construction. The double-shielded gasket is recommended for large doors where controlling the mating surface joint unevenness can be difficult and expensive. A further consideration for utilizing the rigid frame approach is the load bearing support of extruded aluminum which aids in applications where shock and vibration are encountered.

Standard knit wire mesh is available in either monel, tin-plated ferrous, or knit mesh with elastomer core of neoprene or silicone sponge.

The highest possible attenuation levels are achievable with EMI/RFI knitted wire gasketing. Attenuation levels beyond 110 dB int eh E-Field and 65 dB in the H-Field are common. Higher levels of attenuation are attainable with special materials and special design. Contact our sales engineers for additional information.

For more information click here.

EMI/RFI Gaskets for Connectors

EMI/RFI Gaskets for Connectors

connector_gaskets1

Grounding of AN Series, Bendix and RF-Type connectors to an enclosure bulkhead in a manner that will reduce the ingress or egress of EMI/RFI interference can be accomplished through the use of these connector gaskets.

Connector gaskets materials can be selected to meet environmental and mechanical requirements of the package to be shielded. These gaskets offer optimum RF grounding of connectors at minimal cost.

The elastomer embedded product is both an EMI shield and moisture seal with a minimum thickness, thus not requiring extended protrusion from surface enclosures.

View Seal & Design’s EMI / RFI Offerings or Contact Seal & Design and learn how we can help create custom solutions for your applications.

EMI/RFI Knitted Wire Mesh Gasketing

shield_seal_gasketing3All mesh EMI/RFI knitted wire gasketing is available in various cross sections to satisfy the many different requirements encountered in shielding applications. The choice between rectangular, round, round with fin or double round with fin depends on the enclosure or equipment to be shielded.

Each strip has the same resiliency created by the knit construction but reacts differently dependent on material and shape. Of the most common materials used, Monel has the best spring factors while silver-plated brass has the highest conductivity. All mesh gasketing which is rectangular or round is recommended for grove mounting while single round with fin or double round with fin is recommended for flat surfaces. Surface conditions must be clean and free from such contamination as paint or oil for good conductivity and there should be an even distribution of pressure continuously along the length of the gasket.

A wide range of knit wire mesh materials are available. The standard knit wire mesh is either Monel or tin-plated ferrous. While these are standar, aluminum, silver-plated brass, gold-plated copper, tungsten, stailess stell, silver, nickel, iconel, and other wire can be knit and fabricated into special products.

Learn more about Seal & Design’s EMI / RFI products

Rogers PORON Material

Rogers Corp PORON Material is engineered foam designed to provide the best durable lasting performance in a wide variety of cushioning applications. PORON foam is an open cell foam that has excellent compression set resistance.

PORON benefits:

  • Excellent compression set resistance which enables durable, long-term performance for gasketing, sealing, and cushioning.
  • Low-outgassing and non-fogging, containing no plasticizers or residual chemicals to contaminate the device. The material will not become brittle and crumble and is non-corrosive to metal.
  • Inherently flame retardant without the use of additives. Many of the materials meet UL HBF and MVSS 302.
  • Engineered urethane formulations offering a wide modulus range – 2-90 psi @ 25% deflection – for more design versatility requirements.
  • Good chemical resistance
  • Die-cuts cleanly and works with a broad range of adhesives
  • Broad range of formulas and thicknesses from 0.012″ to 0.500″ (0.43mm to 12.7mm)

Learn the difference between Open Cell Foam and Closed Cell Foam is highlighted in this short educational video from Rogers.

logo-rogers-preferred-converterSeal & Design is proud to be a Rogers PORON Preferred Converter.

There are several different formulations of PORON and Seal & Design can help you choose the right PORON material that meets your applications’ specifications.

Learn more about the Rogers PORON material line-up on our website.