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Specifications
| Parameter | Details |
| Diameter Range | 6-250 mm |
| Hardness | Customizable (Shore A) |
| Color | Customizable |
| MOQ | 1,000 pcs |
| Lead Time | Approx.15 days |
| OEM/ODM | Available |
Sponge rubber balls combine the compressibility of sponge with the structural resilience of rubber, giving them a longer service life than pure sponge types while remaining soft enough to protect sensitive tube surfaces. The sponge core allows the ball to compress and expand with tube diameter variation, while the rubber layer maintains shape and provides consistent wall contact pressure across repeated cleaning cycles.
They are a practical choice for systems running continuous online cleaning circuits where ball replacement frequency is a cost concern, and where pure rubber cleaning balls are too firm for the tube material in use.
| Type | Core Structure | Surface | Best For |
| Sponge Cleaning Balls | Open-cell sponge | Soft sponge | Maximum softness, low-pressure systems |
| Sponge Rubber Balls | Sponge core + rubber layer | Firm rubber | Balance of softness and durability |
| Rubber Cleaning Balls | Solid rubber | Firm rubber | High-flow systems, harder fouling |
Sponge rubber balls sit in the middle of the hardness range. They absorb minor tube diameter variation better than solid rubber balls, and last significantly longer in high-cycle online systems than pure sponge balls which wear down faster under continuous circulation.
| Rubber Layer | Key Property | Best For |
| Natural Rubber (NR) | Standard elasticity | General heat exchanger and condenser systems |
| EPDM Rubber | Heat & ozone resistant | High-temperature systems, outdoor cooling |
| Nitrile Rubber (NBR) | Oil resistant | Oil & gas, petrochemical heat exchangers |
| Food-grade Rubber | FDA compliant | Food processing, pharmaceutical systems |
| Parameter | Details |
| Diameter Range | 6–250 mm |
| Hardness | Customizable (Shore A) |
| Color | Customizable |
| MOQ | 1,000 pcs |
| Lead Time | Approx. 15 days |
| OEM / ODM | Available |
Sponge rubber balls are widely used in HVAC chiller evaporator and condenser tube bundles running continuous online cleaning systems. Their combination of softness and durability suits copper and cupronickel tubes that need regular cleaning without surface damage over years of operation. See cleaning balls for HVAC systems for HVAC-specific options.
Process heat exchangers in chemical plants and refineries benefit from sponge rubber balls in systems where tube wall protection is required alongside reliable cleaning performance. For heat exchanger-specific options, see cleaning balls for heat exchangers.
Seawater-cooled heat exchangers on vessels require balls that can withstand continuous saltwater circulation without degrading. EPDM sponge rubber balls resist ozone and seawater exposure while keeping titanium and duplex stainless tube surfaces clean. See cleaning balls for marine cooling systems for marine-specific options.
Contact us at info@rubbercleaningballs.com with your tube inner diameter, tube material, operating temperature, and system type. We respond within 24 hours.