Elastomerics Blog

Stockwell Elastomerics silicone seals and gaskets are frequently used in targeted Heating, Ventilation, and Air Conditioning (HVAC) applications where equipment designers require materials that maintain performance during temperature cycling, outdoor exposure, and mechanical vibration. HVAC systems in commercial and industrial environments rely on reliable sealing to support consistent airflow management and indoor air quality. Silicone materials are often selected because they offer extreme temperature resistance, UV and ozone resistance, vibration dampening, and long-term durability.

Why Silicone Is Often Used in HVAC-Related Components

Silicone foams and sponges maintain flexibility and compression set performance across a wide temperature range—typically from –60 °C to +200 °C, depending on the grade. This stability helps support consistent sealing in components exposed to:

• Rooftop or outdoor weather conditions
• Heating elements or elevated internal temperatures
• Repeated thermal expansion and contraction
• Vibration from motors, compressors, and blowers

These characteristics make silicone a practical option for certain HVAC gasketing uses, especially where long-term environmental stability is a priority.

Adhesive-Backed Silicone Gaskets for Easier Installation

Stockwell Elastomerics applies a wide range of 3M™ acrylic pressure-sensitive adhesives (PSAs) to silicone foam and sponge to assist in the installation of these gasketing materials. Adhesive-backed silicone gaskets help installers by:

• Holding the gasket in place before final compression
• Reducing installation time and alignment challenges
• Eliminating the need for liquid adhesives or temporary fixtures

This installation support is especially valuable for contractors and OEM technicians working with multi-panel enclosures, access doors, or irregular sealing geometries.

Specialty Silicone Materials Available

To support HVAC-related design requirements, Stockwell Elastomerics offers silicone materials with specific compliance or performance attributes, including:

• UL 94 V-0 flame-retardant silicone foam and sponge
• Low smoke and low toxicity silicone grades
• FDA-compliant or food-grade solid silicone for equipment used near sensitive processing areas

These materials maintain consistent mechanical properties under compression, supporting sealing reliability in equipment subject to frequent service intervals or environmental exposure.

Stocked Materials Available for Rapid Sampling

Stockwell’s application engineering team is available to help determine which silicone grade best aligns with your performance and assembly needs. We maintain inventory of select silicone foams, sponges, and solid materials to support rapid prototyping and small-quantity sampling for development builds.

If you have an upcoming project requiring silicone gasketing for HVAC or environmental sealing, Stockwell’s team can assist with material selection and manufacturability guidance.

Request a sample or speak with an applications engineer today.