Silicone Products Silicone Sponge Tubing

Bellofram’s silicone sponge tubing offers a flexible and durable solution for sealing, insulating, and protecting components in demanding environments. Manufactured from closed cell silicone sponge, this tubing is engineered to deliver excellent thermal stability, compressibility, and environmental resistance across a wide range of industries.

We offer tubing in any combination of inner diameter (ID) and outer diameter (OD), up to a maximum of 2.5” OD, allowing for design flexibility across multiple applications. Whether you need narrow-diameter tubing for precise fits or larger-diameter profiles for cushioning or sealing, Bellofram can meet your specifications with high consistency and quality.

Our silicone sponge ID tubing and OD tubing is available in a variety of density grades — from soft to firm — giving engineers and designers the ability to match tubing characteristics to specific performance needs. Softer grades are ideal for gentle compression and cushioning, while firmer grades offer stronger structural support and sealing capability.

Thermal Performance and Durability of Silicone Sponge Tubing

Designed to perform in extreme conditions, our soft silicone tubing maintains its physical properties in continuous operating temperatures up to 400°F. It resists compression set, environmental degradation, and weathering, making it suitable for both indoor and outdoor use. Its closed-cell construction ensures low water absorption and excellent resistance to moisture intrusion, making it an effective choice for sealing applications where exposure to liquids or humidity is a concern.

Flexible Silicone Tubing Built for Compliance and Critical Applications

Our flexible silicone tubing can be formulated to meet a variety of regulatory and performance standards. We offer flame retardant versions compliant with UL 94 V-0 and UL HB for use in safety-critical applications. For food-grade and sanitary environments, we also provide options that meet FDA requirements and NSF 51 certification, making this tubing suitable for use in food processing, beverage dispensing, and medical applications.

From protecting delicate electronics to cushioning sensitive equipment or sealing complex assemblies, Bellofram’s flexible silicone tube products are engineered for long-lasting reliability. These profiles offer excellent flexibility, recovery, and chemical resistance, helping to extend the lifespan and performance of your end-use application.

Whether you need a standard profile or a fully customized solution, Bellofram’s silicone sponge tubing offers the design flexibility and durability you need — supported by decades of materials expertise and precision manufacturing.