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Molded Silicone Rubber Gaskets come in low durometers.

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May 23, 2013 - Consisting 10 and 20 durometer Shore A molded Liquid Silicone Rubber compounds, respectively, Wacker Silicones LR3003/10TR and LR3003/20TR provide water sealing and protection for enclosures and portable devices. Products feature optimized tear resistance and surface condition as well as resistance to damaging effects of UV. Also available in 10 and 20 durometer, 12 x 12 in. injection molded liquid silicone rubber sheets come in standard thicknesses of .032, .050, .062, .093, and .125 in.

Low Durometer (Very Soft) Molded Silicone Rubber Gaskets Now Available from Stockwell Elastomerics, Inc

(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

Stockwell Rubber Co. Inc.
4749 Tolbut Ave.
Philadelphia, PA, 19136-1512

Press release date: January 29, 2013

Stockwell Elastomerics now provides 10 and 20 durometer Shore A Liquid Silicone Rubber (LSR) molded gaskets, sheets and custom components. These low durometer compounds provide designers the option of using a soft solid rubber gasket when foam or sponge gaskets are unable to prevent water ingress. Silicone Rubber provides consistent deflection properties in cold and hot climates, and silicone provides long term performance - resisting the damaging effects of UV and sunlight.

Philadelphia, PA, - Stockwell Elastomerics announces the availability of 10 and 20 durometer Shore A molded liquid silicone rubber (LSR) gaskets that provide improved water sealing and protection for enclosures and portable devices. Low durometer LSR gaskets have improved sealing properties over silicone foam or closed cell silicone sponge gaskets. Enclosures and Portable devices are frequently required to pass water ingress requirements such as IP65, IP66 and IP67. Custom molded liquid silicone rubber gaskets are frequently specified to solve such design issues, and Stockwell Elastomerics is a leading manufacturer of these LSR components.

The 10 and 20 durometer LSR compounds are Wacker Silicones LR3003/10TR and LR3003/20TR respectively. Wacker recently enhanced the physical properties of these soft compounds to improve the tear resistance and the surface condition. These enhanced properties have enabled designers of Analytical Instruments, LED Lighting Housings, Ruggedized RFID Tag Readers and Marine Safety Devices to solve particular long term sealing challenges with these materials.

Stockwell Elastomerics also injection molds 12” x 12” liquid silicone rubber sheets in 10 and 20 durometer. Standard thicknesses (.032”, .050”, .062”, .093” and .125”) are in inventory and available to support requirements for die cut, water jet cut and adhesive backed gaskets. Customers can request a free LSR “Touch Brochure” with small samples of these cured liquid silicone products to touch and feel the material. The Liquid Silicone Rubber Touch Brochure can be requested online at:

“These enhanced 10 and 20 durometer LSR compounds have expanded our material options when we are recommending sealing solutions for customers designing rugged portable devices and similar technology equipment needing protection from water ingress“, said Stockwell Elastomerics’ President Bill Stockwell. “We frequently see requirements for gaskets that require soft closure force due to the enclosure design. When a foam or closed cell sponge does not prevent water ingress - these soft LSR compounds can make the difference”

Along with Stockwell Elastomerics’ liquid injection molding capabilities, the company also has on-site fabricating capability of silicone foams, closed cell silicone sponge and similar high performance gasketing materials.

About Stockwell Elastomerics, Inc.
Stockwell Elastomerics’ core competence is the fabrication and molding of silicone rubber and similar high performance elastomers. On-site production capabilities include adhesive lamination, slitting, die cutting, water jet cutting and custom molding. Many Stockwell Elastomerics customers take advantage of water jet cutting for fast turn prototypes and initial production. Stockwell Elastomerics, Inc. is ISO9001-2008 registered.

The Liquid Silicone Rubber Touch Brochure can be requested online at: For small sample sheets of molded LSR, contact Stockwell Elastomerics directly. Contact Stockwell Elastomerics for complete information on silicone rubber products, custom fabrication and molding.

Bill Stockwell
Stockwell Elastomerics, Inc.
4749 Tolbut Street
Philadelphia, PA 19136
(215) 335-3005
Email: or
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