Stockwell Elastomerics
Custom manufacturer of silicone rubber and elastomeric gaskets, seals, cushioning pads, and components for technology equipment, aerospace, medical, and industrial applications.
- CEO / Founder
- Tom Rimel
- Team Size
- 51-200
- Stage
- Established
- Latest Round
- Bootstrapped
Technology & Products
Key Products
Custom silicone gaskets; silicone pads; EMI gaskets; ESD protection products; conductive gaskets; thermal gap filler pads; vibration damping pads; touch screen gaskets; custom enclosure gaskets; liquid silicone injection molding; rubber compression molding; die-cut gaskets; micro molding; 3D-printed silicone prototypes (Lynxter S300X); gasket tape; connector gaskets; ultra-thin silicone gaskets with adhesive backing
Technological Advantage
AS9100:2016 and ISO 9001:2015 certified quality management system; ITAR registered; 100% employee-owned (ESOP) since 2024; Lynxter S300X silicone 3D printing capability for rapid prototyping; multiple manufacturing processes (die cutting, waterjet, laser, LSR injection molding, compression molding, micro molding); in-house material testing; over 100 years of institutional knowledge in silicone elastomers.
Differentiation
Value Proposition
Custom manufacturer of precision silicone elastomer components for demanding environments, with over 100 years of experience, AS9100/ISO 9001 certification, and rapid prototyping via silicone 3D printing.
How They Differentiate
106-year heritage as a family business now 100% employee-owned (ESOP); AS9100:2016 aerospace and ISO 9001:2015 certified; vertically integrated with die cutting, waterjet cutting, laser cutting, liquid silicone injection molding, compression molding, micro molding, and Lynxter S300X silicone 3D printing for rapid prototyping; ITAR registered; all manufacturing in Philadelphia, USA.
Market & Competition
Target Customers
OEMs and engineers designing equipment that must seal, insulate, or protect in extreme environments across electronics, aerospace/defense, medical devices, telecom, renewable energy, EV charging, semiconductor manufacturing, and robotics.
Industry Verticals
Electronics/Electrical; Aerospace & Defense; Medical Devices; Telecom; Renewable Energy (Solar, EV Charging, BESS); Semiconductor Manufacturing; Robotics & Factory Automation; LED Lighting; Analytical Instrumentation; Portable Data Devices
Competitors
Rogers Corporation; Saint-Gobain Performance Plastics; Honeywell HTS
Growth & Milestones
Growth Metrics
21% net revenue increase between 2020 and 2024; 6% revenue decline in 2024; 100+ employees; three buildings in Philadelphia
Major Milestones
1919: Founded by Frederick E. Stockwell as a distributor of belting, hose, and rubber products; Late 1940s-1950s: Entry into advanced materials (neoprene sponge, silicone rubber); 2017: Transitioned to 30% ESOP (Employee Stock Ownership Plan); 2021: Increased ESOP to 45%; 2021: Tom Rimel appointed President & CEO; 2024: Completed 100% ESOP transition; 2025: William Stockwell retires as CEO after 35 years; Integrated Lynxter S300X silicone 3D printing for rapid prototyping