{"product_id":"3m-7000000639-disc-backing-pad-adhesive-psa","title":"3M 7000000639 Disc Backing Pad Adhesive Psa","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe 3M 7000000639 is a medium-density disc backing pad that uses a pressure-sensitive adhesive (PSA) attachment system. It serves as the interface between a power tool and PSA-style abrasive discs, holding the disc flat and transferring rotational force evenly across the abrasive surface. The medium-density construction provides a balance of conformability and support, making it suitable for both flat and moderately contoured workpieces. Weighing just 0.06 pounds, it is a lightweight component that does not add significant mass to the tool assembly. Installation and replacement are handled by grinding, metalworking, and fabrication tradespeople working with angle grinders or disc sanders.\u003c\/p\u003e\u003cp\u003eThis backing pad is intended for use with PSA abrasive discs in grinding, blending, finishing, and surface preparation applications. The PSA interface allows for quick disc changes without mechanical fasteners. Typical use scenarios include weld blending on steel fabrications, surface prep ahead of coating or painting, and general material removal tasks in shop or field environments. It is well suited to both production and maintenance work where consistent disc contact and backing support are required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePSA (pressure-sensitive adhesive) attachment system for tool-free disc changes\u003c\/li\u003e\n\u003cli\u003eMedium-density construction balances conformability with firm abrasive support\u003c\/li\u003e\n\u003cli\u003eLightweight at 0.06 pounds, minimizing added tool mass\u003c\/li\u003e\n\u003cli\u003eCompatible with PSA-style abrasive discs for grinding and finishing applications\u003c\/li\u003e\n\u003cli\u003eSingle-unit packaging for straightforward replacement stocking\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement backing pad for use with PSA abrasive discs on angle grinders and disc sanders that accept this backing pad style and diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by grinding or fabrication tradespeople. Always power down and disconnect the tool from its power source before removing or installing a backing pad. Ensure the spindle thread and pad threads are clean and fully engaged before operating the tool. Inspect the PSA surface for contamination before attaching an abrasive disc, as debris will reduce disc adhesion and can cause disc separation during operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacking Pad Type\u003c\/strong\u003e: Adhesive PSA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDensity\u003c\/strong\u003e: Medium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: 3M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 7000000639\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51722710712626,"sku":"7000000639","price":24.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9e7940c276a78384df31a9db89668154.jpg?v=1788594801","url":"https:\/\/voomisupply.com\/products\/3m-7000000639-disc-backing-pad-adhesive-psa","provider":"Voomi Supply","version":"1.0","type":"link"}