How to Choose Bulb Trim Seals
Bulb trim seals provide sealing and insulation for doors, hatches, and enclosures. These industrial rubber products have bulb and retainer sections that are made of different materials. The bulb section provides sealing and insulation under compressive force. The trim or retainer presses onto a flange or substrate. Each section of the seal also has a different durometer or hardness to support proper compression.
This technical article from Elasto Proxy is designed to help you choose the right bulb trim seals for your application. In addition to compound selection and part dimensions, product designers and technical buyers need to consider color, texture, internal supports, and exterior finishes. Your application may also require flame-resistant compounds or rubber that meets specific industry standards. (more…)


Defense contractors trust sealing and insulation solutions from Elasto Proxy, a custom-fabricator of low-to-medium volumes of rubber and plastic parts. For over 25 years, our ISO 9001:2008-certified company has been providing custom solutions like these for major military programs:
ZMT insulation from Elasto Proxy is a thermal acoustic composite that also resists fire and chemicals. Applications include firewalls and engine bays.




