Specialty Silicone Products (SSP) invites you to visit us at the AOC International Symposium & Convention from December 9 to 11, 2025 at National Harbor, Maryland. AOC 2025 is the premiere event for electronic warfare, electromagnetic spectrum operations, and cyber-electromagnetic activities, and nearly 2500 professionals from 40+ countries are expected to attend.
Visit SSP in Booth #840 and meet Kevin Wickert, Sales and Marketing Manager; Dominic Testo, Business Development Manager; Gary Falchi, Business Development Specialist; and Taylor Smith, Product Engineer. SSP makes M83528 QPL certified elastomers, space-grade silicones with low outgassing, EMI gaskets, and EMI O-rings at our ISO 9001:2015 manufacturing facility.
M83528 QPL Certified Elastomers
SSP makes MIL-DTL-83528 silicones and fluorosilicones that are part of the Qualified Product List (QPL) from the U.S. Defense Logistics Agency (DLA). These M83528 QPL certified elastomers contain silver-coated particles and meet the EMI shielding requirements of MIL-DTL-83528 sections A, B, C, D, and K. SSP’s materials provide alternatives to Parker Chomerics CHO-SEAL products.
Section | Durometer | Fill Material | Base Elastomer | Use This | Instead of |
A | 65 | Silver-copper | Silicone | ||
B | 65 | Silver-aluminum | Silicone | ||
C | 75 | Silver-copper | Fluorosilicone | ||
D | 70 | Silver-aluminum | Fluorosilicone | ||
K | 85 | Silver-aluminum | Silicone |
SSP also makes EMI elastomers with non-silver coated fills that are used in some military projects. For example, SSP2529 and SSP2551 contain nickel-aluminum particles and are used when galvanic corrosion resistance is required, such as in naval applications. SSP also makes nickel-graphite filled elastomers, including UL 94-V0 EMI shielding for aviation, aerospace, and spaceflight.
Space-Grade Silicone with EMI Shielding
SSP’s line of space-grade elastomers includes SSP-502-55LT, a low outgassing, low temperature silicone that’s used in EMI gaskets and EMI O-Rings. This 55-durometer EMI shielding silicone has a TR-10 low-temperature capability of -70°C (-94°F). The TR Test is part of ASTM D1329, a standard test method for evaluating a rubber’s retraction at low temperatures.
For an electrically conductive silicone, SSP-502-55LT can withstand very low temperatures. It also passes the ASTM E595 low outgassing test with a Total Mass Loss (TML) of 0.15% and has a shielding effectiveness of <113 dB for the 20 MHz to 10 GHz frequency band. SSP also makes a space-grade silicone, SSP2575, that does not provide EMI shielding but remains flexible at -116°C (-177°F).
EMI Gaskets and EMI O-Rings
In addition to EMI elastomers, SSP makes fabricated products that arrive ready-to-install. EMI gaskets in M83528 slash sizes (part numbers) can be flash cut, die cut, or compression molded from the materials that we manufacture. We also provide EMI gaskets with an electrically-conductive adhesive, and you’ll like our low minimums and short lead times.
The M83528 part numbers that SSP fabricates include EMI O-rings that are designed to fit a groove. This includes M83528/002 (Standard) and M83528/005 (Non-Standard) products. For prototyping and lower-volume applications, we bond EMI O-rings using an electrically conductive adhesive that won’t create a hard spot. For higher volumes, we mold EMI O-rings using tools we produce in-house.
Meet SSP at AOC 2025
SSP is looking forward to exhibiting at the AOC International Symposium & Convention in December, and we hope to see you there. Visit us in Booth #840 and talk to our team about M83528 QPL certified elastomers, space-grade silicones with low outgassing, EMI gaskets, and EMI O-rings. From ready-to-fabricate materials to ready-to-fabricate products, SSP makes the EMI shielding you need.
Contact SSP for more information, or to schedule a meeting with us at AOC 2025 in Booth #84
