{"product_id":"polaris-seal-ceramic-and-spring-pb4sq-dd1","title":"POLARIS SEAL CERAMIC AND SPRING PB4SQ (DD1)","description":"\u003cp\u003eThe Polaris PB4SQ Ceramic and Spring Mechanical Shaft Seal (Part #R0747800) is a genuine OEM internal pressure seal engineered to prevent water from leaking along the motor shaft of your booster pump. This heavy-duty assembly features a premium carbon-graphite ceramic mating ring and a corrosion-resistant stainless steel compression spring. Swapping a leaking or worn-out shaft seal is the single most critical step to prevent water from migrating backward into the motor housing and shorting out expensive internal windings or motor bearings.\u003cbr\u003e\nPart Number: R0747800 (Cross-referenced: PS-3890, 60881)\u003cbr\u003e\nMaterial: Ceramic, Stainless Steel Spring, Buna Rubber\u003cbr\u003e\nShaft Size: 5\/8\"Seal Head Type: Type D\u003cbr\u003e\nCompatibility: Engineered exclusively for the multistage Polaris PB4SQ pressure booster pump (2017–current models).\u003c\/p\u003e","brand":"Heritage Pool Supply","offers":[{"title":"Default Title","offer_id":48624345153693,"sku":"052337073813","price":34.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/shop.emeraldpoolcare.com\/products\/polaris-seal-ceramic-and-spring-pb4sq-dd1","provider":"Emerald Pool Care \u0026 Spas","version":"1.0","type":"link"}