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.