{"product_id":"unisorb-st-spring-isolator","title":"ST Spring Isolator","description":"\u003cp\u003ePre-loaded steel spring isolator delivering a 2 to 3 Hz natural frequency for very low frequency foundation isolation. High capacity units install beneath concrete inertia blocks and equipment bases, and factory pre-loading keeps installed height manageable during placement and grouting. Applied where elastomer or foam elements cannot reach the required isolation frequency, such as large presses and vibration-sensitive installations near heavy dynamic machinery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNatural frequency: 2 to 3 Hz\u003c\/li\u003e\n\u003cli\u003eConstruction: pre-loaded steel spring isolator\u003c\/li\u003e\n\u003cli\u003eLoad: high load capacity\u003c\/li\u003e\n\u003cli\u003ePackaging: per isolator, pre-loaded\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Unisorb","offers":[{"title":"Default Title","offer_id":52824235835668,"sku":"ST44-8.4","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0919\/2944\/4628\/files\/ST-Block_yellow.png?v=1784659602","url":"https:\/\/frankaggregate.com\/products\/unisorb-st-spring-isolator","provider":"Frank Aggregate","version":"1.0","type":"link"}