|
Stockwell Elastomerics, Inc. continues to produce compression mold custom rubber components on-site in Philadelphia to service fast-turn requirements and specialty applications for customers in technology-driven markets. As our core business revolves around silicone rubber technology, our strength in rubber compression molding includes silicone rubber compression molding and fluorosilicone
compression molding.
Rubber compression rubber molding is a labor intensive production activity. When we review a potential requirement for a molded component, we consider whether the requirements include design assistance and prototyping, special rubber molding compounds, quantities and sizes that allow us to provide value.
Why Stockwell Elastomerics for Rubber Compression Molding?
We are the only gasket manufacturer and custom rubber compression molding company of our size that provides on-site rubber molding, liquid silicone rubber molding, water jet cutting and die cutting. This multi-faceted approach to rubber component manufacturing allows us to offer a broader range of solutions to design challenges. With broad capabilities, our most common production quantities tend to be 500 to 20,000 pieces. Our rubber compression molding press sizes range from 16" x 16" platens, 24" x 24" platens to 30" x 30". Our molding tolerance capabilities are typically RMA A2 precision and RMA A3 commercial.
Cryogenic De-flashing and Compression Molding
The most recent enhancement to our rubber compression molding capabilities has been the recent installation of our new Cryogenic Systems Model SCC1505 cryogenic de-flashing system. Using liquid nitrogen and small tumbling beads, this system can remove parting line flash from difficult to reach areas on both simple and complex molded parts. The typical flash condition is reduced from .015" long, down to .005" long maximum flash extension. Cryogenic de-flashing has been effective on silicone rubber, fluorosilicone rubber, nickel-graphite filled silicone and silver plated aluminum filled fluorosilicone, along with liquid injection molded seals. Contact Us for samples of silicone molded parts after cryogenic de-flashing - you will have to look very close for the parting lines!
 Molded FDA and Heat Seal Silicones
Silicone rubber compounds are inventoried from 25 to 80 durometer Shore A. These are gum based compounds, in contrast to the 2-part liquid silicone rubber compounds that support our liquid injection molding processes. Most of our rubber compression molding silicone compounds are methyl vinyl based, which can be formulated for high elongation, flex, tensile and tear properties for mechanically demanding applications and withstand temperatures from -100°F to 500°. Phenyl based silicones are intended for very low temperatures, down to -130°F that can be required in rubber gaskets for laboratory instrumentation and aerospace applications. Gum based silicones for compression molding can be formulated to meet a number of industrial and military specifications such as ZZ-R-765 and AA-59988.
Electrically conductive nickel-graphite filled silicone, silver plated aluminum filled filled silicone and carbon filled conductive silicone are used in compression molding for EMI Shielding gaskets and components to promote ESD protection. Most of these conductive materials are also available in fluorosilicone base compounds for aerospace related requirements requiring fuel and fluid resistance.
Specialty Silicone Compounds
Electrically Conductive Nickel-graphite Filled Silicone
Silver filled silicone and carbon filled conductive silicone are used in compression molding for EMI shielding gaskets and components to promote ESD protection.
Thermally Conductive Silicone Compounds
Available for compression rubber molding thermal interface pads used in electronics and thermally conductive gaskets used in medical sterilization and heat sealing.
Platinum cure silicone compounds, also referred to as addition cure silicones, are formulated for high strength and purity and frequently used in medical applications.
Fluorosilicone rubber compounds
In 40 and 60 durometer Shore A are certified to Mil-R-25988. We have other fluorosilicone compounds meeting AMS and commercial compounds.
Compression rubber molding prototyping can be provided by tooling up a single cavity mold. Our preferred tool maker is local and closely aligned to our business model to provide excellent support.
We frequently receive requests for compression molded special rubber sheets in non-standard gauges to support rapid prototype development for aerospace equipment, instrumentation and medical equipment. Our 12" x 12" and 14" x 14" sheet molds serve these needs. Silicones and fluorosilicones can be compression molded into sheets from .030" thick through .500" thick.
Contact Stockwell Elastomerics, Inc.
Contact Us for further assistance with silicone rubber compression molding and fluorosilicone
compression molding.
|
