High-Rebound Foamed Silicone Low Compression-Set Silicone

In real-world conditions such as door seals, gaskets and cushioning pads, materials must withstand long-term repeated compression. Ordinary foam padding cannot fully recover after compression, easily developing permanent set that leads to sealing failure; ordinary foamed silicone shows inconsistent rebound and dimensional drift over long use, affecting assembly consistency; and imported fatigue-resistant foaming materials are generally expensive with long delivery times, making it difficult to support the rapid capacity expansion of global manufacturing.

The newly launched high-rebound low compression-set foamed silicone uses a two-component platinum addition-curing system. The foaming ratio is adjustable from 2x to 7x by grade, with cured density as low as 0.105 g/cm3, uniform pores, low linear shrinkage and stable rebound. The material recovers its original shape quickly after repeated compression, with low compression set and no significant sagging over long-term use, keeping sealing and cushioning performance stable. It also meets UL94-V0 flame retardancy with good electrical insulation, and supports long-term service from -65℃ to 200℃, adapting to a wide range of demanding conditions.

On the application side, the product can be widely used in sealing gaskets and strips under long-term cyclic compression, damping and cushioning parts for electronics, automotive interior sealing and seat cushioning, appliance door seals and cushioning pads, sports and protective equipment padding, mattress, seat and lumbar cushion filling, and filling for robots and soft goods. Part A and Part B are mixed at a 1:1 ratio, followed by stirring, vacuum degassing and heat curing. The material supports automated casting and die-cutting secondary processing. For downstream factories, it maintains stable sealing and cushioning performance over long-term use, reducing replacement frequency and maintenance cost.

HONG YE JIE has established a full-process quality control system covering raw material inspection, precision proportioning, rebound system dispersion, filtration and purification, and finished-product performance testing. Before shipment, the new product undergoes rebound rate, compression set, foaming ratio, flame retardancy and temperature resistance, and appearance consistency testing to ensure every batch is stable and reliable. The product is supplied in independently sealed A/B drums with multiple packaging options, shipped as non-dangerous goods, and convenient for overseas customers' warehousing and customs clearance. The company also supports custom development, adjusting foaming ratio, density, hardness, rebound rate and curing speed according to working conditions, and provides sample testing and technical guidance.

A HONG YE JIE representative said that high-rebound low compression-set foamed silicone is a key new product the company is introducing for long-term cyclic applications. Going forward, the company will continue to upgrade Foamed Silicone material technology, strengthen its advantages in high rebound, low compression set and stable dimensions, and provide globally competitive domestically produced silicone material solutions for global sealing, cushioning and damping manufacturers.