Restrained Spring Isolator

SKU ICSN Category

Isotech’s ICSN series of floor-mounted, Restrained Spring Isolator

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Isotech’s ICSN series of floor-mounted, housed isolators with equipment supporting plate, are Pre-Compressed isolators, designed to provide vibration isolation for HVAC equipment. ICSN isolators are available in 1″, 2″, 3″, 4″and 5″ deflection colour-coded, powder coated springs and to offer maximum corrosion resistance, housing are hot-dip galvanized. These isolators are engineered to limit vertical and lateral movement of supported equipment and provide resisting force for wind load. The side limit bolts built within the snubbers allow for significant fluctuation in operating weight while preventing additional stress on connected piping, by limiting the upward lift of the equipment when drained for service purposes. The uniquely engineered springs are designed to provide a minimum of 50% additional travel to solid and are fully powder-coated and colour-coded for superior corrosion protection and ease of identification. All other hardware is zinc plated, including the adjustment nut, restraining bolts, and support rod. Housings are hot-dip galvanized to endure a variety of environments. Applications include indoor and outdoor mechanical equipment isolation with lateral loads and significant to no change in operating weight.

Competitive Advantages: ICSN is Pre-Compressed isolator and is engineered to meet all the requirements for HVAC application and to have a minimum of Kx/Ky = 1 and 50% over-travel and yet offer low profile spring design. This would be a significant advantage when there is a limitation in installation height. Isotech developed a line of springs that is incorporated into various isolation products and capacities by side to side and nesting combinations, resulting in minimum spring inventory and therefore reducing cost to provide Isotech with the advantage of selling at a competitive price. 

The housing is engineered and developed with high yield steel material that offers significant improved resisting uplift and lateral capacities compared to equivalent competitors’ product, resulting in higher capacities for a lower manufacturing cost, therefore providing Isotech with the cost competitiveness over other vendors in the industry. The overall isolator has pre-compression feature, which offers the installing contractor system significant height saving and remarkable labour savings for the overall installation. For maximum corrosion protection, the housing has hot-dip galvanized finish.

Additional information

Deflection (Inch)

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Layers of Rubber

N/A, R1, R2


100, 200, 300, 400, 500, 600, 800, 1000, 1200, 1500, 1800, 2000, 2300, 2500, 2800, 3000, 3500, 3800, 4000, 4500, 5000, 5600, 6000, 6600, 7000, 7600, 8000, 9000


ICSN-2-100-4500 – datasheet
ICSN-2-100-4500-Installation Instructions

ICSN-2OR2-100-4500 – datasheet 
ICSN-2OR2-5000-9000 – datasheet

ICSN-2R2-100-4500- irmr- wo- grommet

ICSN-2OR3-100-4500 – datasheet 

ICSN-2R3-100-4500w- IR MR MR – datasheet 
ICSN-2R3-5000-9000 DATASHEET

ICSN-2R4-100-4500-w-grommet – datasheet 
ICSN-2R4-100-4500-w-o grommet – datasheet 
ICSN-2R4-5000-9000 datasheet

ICSN-20R4-100-4500 W- O.V. IRMRMRMR- datasheet
ICSN-2OR4-5000-9000 – datasheet

ICSN-2R5-5000-9000 – datasheet 

ICSN-3-100-4500- datasheet

ICSN-3R2-100-4500- datasheet
ICSN-3R2-3000-9000- datasheet 

ICSN-3R3-3000-8400- datasheet

ICSN-3R4-3000-8400- datasheet




ICSN-5-200-4500 – datasheet 
ICSN-5-200-4500 – Installation Instructions